Adam Levine (The Voice (2011)); Meredith Vieira (The Meredith Vieira Show (2014)). Also: Maroon 5 performs.

Blake Shelton (The Voice (2011)) is interviewed and performs; Tim Heidecker and Eric Wareheim (Tim and Eric's Bedtime Stories (2013)). Also: Sheila E. sits in with The Roots.

Larry David (Broadway play "Fish in the Dark"); model Gisele Bündchen discusses her new ad campaign for Under Armour. Also: Jeezy performs with Future.

Claire Danes (Homeland (2011)); Little League pitcher Mo'ne Davis. Also: Fences performs with Macklemore.

Jason Segel (novel "Nightmares!"); Steve Harvey (book "Act Like a Success, Think Like a Success"). Also: Alicia Keys performs.

Keith Richards (book "Gus and Me: The Story of My Granddad and My First Guitar"); Debra Messing (The Mysteries of Laura (2014)). Also: The Replacements perform.

Hugh Jackman (Broadway play "The River"); Nick Offerman (book "Paddle Your Own Canoe"). Hugh and Jimmy play pool bowing, also: Luke Bryan performs.

Jessica Chastain (The Disappearance of Eleanor Rigby: Them (2014)); Jeffrey Tambor (Transparent (2014)). Also: Chris Brown performs.

Glenn Close (Broadway play "A Delicate Balance"); Justin Long (Tusk (2014)); Kurt Braunohler performs stand-up.

Barbra Streisand (album "Partners") is interviewed and performs.

Julianna Margulies (The Good Wife (2009)); Jerry Lewis (The Nutty Professor (1963)). Also: Public Enemy performs.

Liam Neeson (A Walk Among the Tombstones (2014)); director Terry Gilliam (The Zero Theorem (2013)). Also: Tim McGraw performs.

Billy Crystal (book "Still Foolin' 'Em") discusses his friendship with Robin Williams; Rose Byrne (This Is Where I Leave You (2014), Broadway play "You Can't Take It with You"); chef Nobu Matsuhisa prepares sushi. Also: Lecrae sits in with The Roots.

Jimmy celebrates his 40th birthday with guest James Spader (The Blacklist (2013)), and with surprise guest Stevie Wonder, who performs and is interviewed.

Sofía Vergara (Modern Family (2009)); Megan Boone (The Blacklist (2013)). Also: The Black Keys perform.

Kerry Washington (Scandal (2012)); Carson Daly (The Voice (2011)). Also: Julian Casablancas and The Voidz perform.

Andy Samberg (Brooklyn Nine-Nine (2013)); NBA Most Valuable Player Kevin Durant of the Oklahoma City Thunder (NBA 2k15 (2014)). Also: Kenny Chesney performs.

Chris Pratt (Chris Pratt/Ariana Grande (2014)); Rosamund Pike (Gone Girl (2014)). Also: John Mellencamp sits in with The Roots and performs.

Matthew Broderick and Nathan Lane (Broadway play "It's Only a Play"). Also: Robert Plant is interviewed and performs with The Sensational Space Shifters.

Ben Affleck (Gone Girl (2014)); Kate Walsh (Bad Judge (2014)). Also: Tony Bennett performs.

Tyler Perry (Gone Girl (2014)); Miles Teller (Whiplash (2014)). Also: Lucinda Williams performs.

Jennifer Garner (Men, Women & Children (2014)); John Mulaney (Mulaney (2014)). Also: Lady A performs.

Newly retired Yankees star shortstop Derek Jeter; James Marsden (The Best of Me (2014)). Also: 5 Seconds of Summer performs.

Emma Thompson (book "The Spectacular Tale of Peter Rabbit"); Dane Cook (Dane Cook: Troublemaker (2014)) performs stand-up and is interviewed.

Jeremy Renner (Kill the Messenger (2014)); Carol Burnett (Broadway play "Love Letters"); Mario Batali makes gazpacho. Also: Joe Perry sits in with The Roots.

Kristen Stewart (Camp X-Ray (2014)); Artie Lange (Artie Lange: The Stench of Failure (2014)). Also: Jason Aldean performs; Nas sits in with The Roots.

Robert Downey Jr. (The Judge (2014); National Public Radio's Ira Glass ("This American Life"). Also: Big & Rich perform.

Steve Carell (Alexander and the Terrible, Horrible, No Good, Very Bad Day (2014)); Julianne Hough (Dancing with the Stars (2005)). Also: Phil Selway performs with The Dap-Kings.

Jada Pinkett Smith (Gotham (2014)); Nick Kroll (Kroll Show (2013), The League (2009)). Also: Bobby Shmurda performs with The Roots.

Zach Galifianakis (Birdman or (The Unexpected Virtue of Ignorance) (2014)); Casey Wilson (Marry Me (2014)); Andrew Orvedahl performs stand-up.

Emma Stone (Birdman or (The Unexpected Virtue of Ignorance) (2014)); Logan Lerman (Fury (2014)). Also: Sam Smith performs.

Shailene Woodley (White Bird in a Blizzard (2014)); Michael Shannon (Young Ones (2014)). Also: Eric Church performs; Lenny Pickett sits in with The Roots.

Sting (Broadway musical "The Last Ship"); Jason Schwartzman (Listen Up Philip (2014)). Also: A performance by the Broadway cast of "The Last Ship".

Bradley Cooper (Broadway play "The Elephant Man"). Also: Neil Diamond (album "Melody Road") performs and is interviewed.

Ewan McGregor (Broadway play "The Real Thing"); Charles Barkley (Inside the NBA (1988)). Also: Wilco performs; Herbie Hancock sits in with The Roots.

Daniel Radcliffe (Horns (2013)); Mike Tyson (Mike Tyson Mysteries (2014)). Also: Sturgill Simpson performs.

Jake Gyllenhaal (Nightcrawler (2014)); Paul Reubens (Pee-wee's Big Holiday (2016)). Also: She & Him perform; George Clinton sits in with The Roots.

Gordon Ramsay (MasterChef Junior (2013)); Jimmy presents kids' inventions. Also: Little Big Town performs.

Kevin Spacey (Call of Duty: Advanced Warfare (2014)); Olivia Munn (The Newsroom (2012)); Kenneth Lucas perform stand-up.

Anne Hathaway (Interstellar (2014)); Gael García Bernal (Rosewater (2014)); World Series MVP Madison Bumgarner of the San Francisco Giants. Also: Stevie Nicks performs.

Savannah Guthrie and Matt Lauer (Today (1952)); Felicity Jones (The Theory of Everything (2014)). Also: FKA twigs performs.

Bette Midler performs and is interviewed. Also: Jim Gaffigan (book "Food: A Love Story").

Matthew McConaughey (Interstellar (2014)); Beth Behrs (2 Broke Girls (2011)). Also: Tove Lo performs.

Jay Leno (Jay Leno's Garage (2006)); Lucy Liu (Elementary (2012)); science demonstration with Kevin Delaney. Also: Dave Davies sits in with The Roots.

Jeff Daniels (Dumb and Dumber To (2014)); Mackenzie Foy (Interstellar (2014)). Also: The New Basement Tapes perform.

Drew Barrymore (Knife Fight (2013)); Peter Farrelly and Bobby Farrelly (Dumb and Dumber To (2014)). Also: Johnny Marr performs.

Channing Tatum (Foxcatcher (2014)); Eddie Redmayne (The Theory of Everything (2014)). Also: Logic performs.

Josh Hutcherson (The Hunger Games: Mockingjay - Part 1 (2014)); Tracey Ullman (Into the Woods (2014)). Also: Echosmith performs.

Liam Hemsworth (The Hunger Games: Mockingjay - Part 1 (2014)); Katherine Heigl (State of Affairs (2014)); Sebastian Maniscalco performs stand-up. Also: Kool & The Gang sit in with The Roots.

Benedict Cumberbatch (The Imitation Game (2014)); Allison Williams (Peter Pan Live! (2014)). Also: Jimmy performs with The Roots

Russell Brand (Russell Brand: Messiah Complex (2013)); Brooke Shields (book "There Was a Little Girl: The Real Story of My Mother and Me"). Also: chef Mario Batali makes chicken saltimbocca.

Jon Stewart (Rosewater (2014)); Padma Lakshmi (Top Chef (2006)). Also: Jim Gaffigan performs stand-up.

Mark Ruffalo (Foxcatcher (2014)); Stephen Merchant (Hello Ladies: The Movie (2014) (TV). Also: Romeo Santos performs; Anthony Kiedis sits in with The Roots.

Julianne Moore (The Hunger Games: Mockingjay - Part 1 (2014)); Michael Cera (Broadway play "This Is Our Youth"). Also: Kid Rock performs.

Tim Allen (Last Man Standing (2011)); musician Will.i.am is interviewed. Also: Dej Loaf performs.

Bill O'Reilly (book "Killing Patton"). Also: Lorde performs and is interviewed.

Christopher Walken (Peter Pan Live! (2014)); Nick Jonas (Kingdom (2014)). Also: Iggy Azalea performs.

Whoopi Goldberg (Top Five (2014)); Rashida Jones (A to Z (2014)); Tom Colicchio (Top Chef (2006)) presents ideas for Thanksgiving leftovers.

Martin Short (autobiography "I Must Say: My Life as a Humble Comedy Legend" and Inherent Vice (2014)); Gabrielle Union (Top Five (2014)). Also: Mary J. Blige performs.

Reese Witherspoon (Wild (2014)); David Sedaris (book "Let's Explore Diabetes with Owls"). Also: Rae Sremmurd performs.

Chris Rock (Top Five (2014)). Also: Carrie Underwood performs and is interviewed.

Ricky Gervais (Night at the Museum: Secret of the Tomb (2014)); Steven Van Zandt (Lilyhammer (2012)). Also: ILoveMakonnen (Ilovemakonnen) performs.

Mark Wahlberg (The Gambler (2014)); Kevin Nealon (Kevin Nealon's Laugh Lessons (2014)) performs stand-up and is interviewed. Also: Steve Carell performs with The Ragtime Gals.

Dwayne Johnson (Wake Up Call (2014)); Barbara Walters (Barbara Walters Presents: The 10 Most Fascinating People of 2014 (2014)). Also: Rick Ross performs with K. Michelle.

Martin Freeman (The Hobbit: The Battle of the Five Armies (2014)); Megan Mullaly (Broadway play "It's Only a Play"). Also: Cat Stevens (aka Yusuf) performs.

Oprah Winfrey (Selma (2014)). Also: Idina Menzel performs.

Christoph Waltz (Big Eyes (2014)). Also: Nicki Minaj is interviewed and performs with Skylar Grey.

Sir Paul McCartney (Destiny (2014) and Paul McCartney: Hope for the Future (2014)). Also: Tony Bennett and Lady Gaga are interviewed and perform together. And: Craig Wayne Boyd sits in with The Roots.

Amy Adams (Big Eyes (2014)); Nick Offerman (Parks and Recreation (2009)). Also: Foo Fighters perform.

Ben Stiller (Night at the Museum: Secret of the Tomb (2014)); Brie Larson (The Gambler (2014)). Also: Damon Wayans performs stand-up and chats briefly with Jimmy.

Chris Pine (Into the Woods (2014)); David Oyelowo (Selma (2014)); chef Bobby Flay makes pepper-crusted martinis and porterhouse steak.

Jerry Seinfeld (Comedians in Cars Getting Coffee (2012)); the band One Direction is interviewed. Also: Big Sean performs with E-40 and The Roots.

Bradley Cooper (American Sniper (2014)); Harry Connick Jr. (American Idol (2002)). Also: Big K.R.I.T. performs with Raphael Saadiq.

Nicole Kidman (Paddington (2014)); Patton Oswalt (book "Silver Screen Fiend"). Also: The War on Drugs performs.

Liam Neeson (Taken 3 (2014)); Fred Armisen and Carrie Brownstein (Portlandia (2011)). Also: Simon Amstell performs stand-up.

Lena Dunham (Girls (2012)); J.K. Simmons (Whiplash (2014)). Also: Ghostface Killah performs with The Revelations and Kandace Springs.

Don Cheadle (House of Lies (2012)); Kate Bosworth (Still Alice (2014)). Also: Lecrae performs.

Charlie Day (It's Always Sunny in Philadelphia (2005)); Jeff Musial presents wild animals. Also: Darius Rucker performs.

Chris Hemsworth (Blackhat (2015)); Sienna Miller (American Sniper (2014)). Also: Joey Bada$$ performs with BJ the Chicago Kid.

Gwyneth Paltrow (Mortdecai (2015)); Josh Gad (The Wedding Ringer (2015)). Also: Panda Bear (aka Panda Bear) performs.

Kevin Hart (The Wedding Ringer (2015)); Jay Baruchel (Man Seeking Woman (2015)). Also: Meghan Trainor performs.

Brian Williams (NBC Nightly News with Lester Holt (1970)); Victoria Justice (Eye Candy (2015)). Also: technology expert Joshua Topolsky shows products from the 2015 International Consumer Electronics Show.

Jennifer Lopez promotes The Boy Next Door (2015) Anthony Mackie promotes (Black or White (2014) Iliza Shlesinger performs stand-up. Jennifer Lopez and Jimmy sing and dance in a segment where they wear the same white tight pants and same stripped turtleneck sweater and Jimmy wears a wig to match Jennifer's hairstyle and dance to the song "tight pants."

Jude Law (Black Sea (2014)); Keri Russell (The Americans (2013)). Also: Fall Out Boy performs.

Jennifer Aniston (Cake (2014)); Microsoft's Bill Gates discusses his global efforts toward clean drinking water; chef Mario Batali (The Chew (2011)) makes bass piccata.

Blake Shelton (The Voice (2011)); sportscaster Bob Costas talks about the upcoming Super Bowl XLIX (2015). Also: Mötley Crüe performs.

Ryan Seacrest (American Idol (2002)); Taraji P. Henson (Empire (2015)). Also: Maddie & Tae perform.

In a special Super Bowl Sunday show from the Orpheum Theatre in Phoenix, Arizona, Will Ferrell and Kevin Hart (Get Hard (2015)) are interviewed and face off against Jimmy in a lip sync battle. Also: Ariana Grande performs.

Michael Keaton (Birdman or (The Unexpected Virtue of Ignorance) (2014)). Also: Gwen Stefani performs and is interviewed. From Universal Studios Hollywood in Los Angeles.

Ellen DeGeneres (The Ellen DeGeneres Show (2003)). Also: Neil Young performs; Doc Severinsen sits in with The Roots. From Universal Studios Hollywood in Los Angeles.

Vin Diesel (Furious 7 (2015)); Carl Reiner (book "The Secret Treasure of Tahka-Paka"); basketball star Kobe Bryant. Also: Iggy Azalea and Jennifer Hudson perform. From Universal Studios Hollywood in Los Angeles.

Will Smith (Focus (2015)); Rosamund Pike (Gone Girl (2014)). Also: Jack White performs. From Universal Studios Hollywood in Los Angeles.

Jamie Dornan (Fifty Shades of Grey (2015); 2015 Sports Illustrated swimsuit cover model Hannah Jeter. Also: Sheppard performs.

Dakota Johnson (Fifty Shades of Grey (2015)); Anthony Anderson (Black-ish (2014)). Also: Mark Ronson performs with Mystikal.

Hugh Grant (The Rewrite (2014)); sports analyst Charles Barkley; Kyle Kinane performs stand-up.

Colin Firth (Kingsman: The Secret Service (2014)); Jack McBrayer and Triumph the Insult Comic Dog (The Jack and Triumph Show (2015)). Also: The Weeknd performs.

Samuel L. Jackson (Kingsman: The Secret Service (2014)); Norman Reedus (The Walking Dead (2010)). Also: Jessie J performs.

Edward Norton (Birdman or (The Unexpected Virtue of Ignorance) (2014)); Craig Robinson (Brooklyn Nine-Nine (2013)). Also: Chris Brown performs with Tyga.

Taylor Swift (album "1989"); John Oliver (Last Week Tonight with John Oliver (2014)). Also: Imagine Dragons performs.

Sigourney Weaver (Chappie (2015)); TV host Andy Cohen (book "The Andy Cohen Diaries: A Deep Look at a Shallow Year"). Also: Ella Henderson performs.

Martin Short (Broadway play "It's Only a Play" and memoir "I Must Say: My Life as a Humble Comedy Legend"); Ruth Wilson (Broadway play "Constellations"). Also: Walk the Moon performs.

Kevin Bacon (The Following (2013)); Amy Sedaris (Hits (2014)). Also: Nick Jonas performs.

Christina Aguilera (The Voice (2011)); Jeff Probst (Survivor (2000)). Also: Kid Rock performs.

Josh Duhamel (Battle Creek (2015)); Gabrielle Union (With This Ring (2013)). Also: Charlie Wilson performs.

Ice-T (Law & Order: Special Victims Unit (1999)); Andrew Rannells (Girls (2012)). Also: Lupe Fiasco performs with Nikki Jean and Crystal 'Rovel' Torres.

James Spader (The Blacklist (2013)); Margot Robbie (Focus (2015)). Also: Tobias Jesso Jr. performs with The Roots.

Josh Hutcherson (Project Imagination: The Trailer); Abbi Jacobson and Ilana Glazer (Broad City (2014)); chef Michael Schlow makes Snowy Negroni cocktails, pasta and an ice cream dessert.

Ryan Reynolds (Woman in Gold (2015)); Terrence Howard (Empire (2015)). Also: Kelly Clarkson performs.

Judi Dench (The Second Best Exotic Marigold Hotel (2015)); Ansel Elgort (The Divergent Series: Insurgent (2015)). Also: The GZA and Tom Morello perform with Kara Lane and The Roots.

Danny DeVito (It's Always Sunny in Philadelphia (2005)); Zoë Kravitz (The Divergent Series: Insurgent (2015)); Artie Lange performs stand-up.

Hugh Jackman (Chappie (2015)); Tiffani Thiessen (Dinner at Tiffani's (2014)). Also: Hozier performs.

Jim Parsons (Home (2015)); Miles Teller (The Divergent Series: Insurgent (2015)). Also: Wiz Khalifa performs with Charlie Puth.

Jennifer Garner (Danny Collins (2015)); Eugene Levy (Schitt's Creek (2015)). Also: Modest Mouse performs.

Will Ferrell (Get Hard (2015)); Chelsea Peretti (Brooklyn Nine-Nine (2013)). Also: Jordan Asher Cruz (aka Boots) performs.

Ben Stiller (While We're Young (2014)); fashion consultant Tim Gunn (Under the Gunn (2014)). Also: Rixton performs.

Jeremy Piven (Mr Selfridge (2013)); singer Ariana Grande is interviewed; technology expert Joshua Topolsky presents baby-themed gadgets. Also: Andy Summers sits in with The Roots.

January Jones (Mad Men (2007) and The Last Man on Earth (2015)); golfer Bubba Watson. Also: Brandon Flowers performs; Villanova piccolo player Roxanne Chalifoux sits in with The Roots.

Elizabeth Banks (Magic Mike XXL (2015)); mixed martial artist Ronda Rousey. Also: Little Big Town performs.

Former GOP presidential candidate Mitt Romney; Grace Helbig (The Grace Helbig Show (2015)). Also: G-Unit performs with The Roots.

Alan Cumming (play "Cabaret" and The Good Wife (2009)); Carey Mulligan (play "Skylight" and Far from the Madding Crowd (2015)). Also: Ludacris performs with The Roots.

Will Forte (The Last Man on Earth (2015)); musician Adam Horovitz (While We're Young (2014)); marine biologist Jeremy Wade (River Monsters (2009)).

Helen Mirren (Woman in Gold (2015)); Oscar Isaac (Ex Machina (2014)). Also: Wale performs with The Roots.

Ethan Hawke (Seymour: An Introduction (2014)); Willie Robertson and Korie Robertson (Duck Dynasty (2012)). Also: Alt-J performs.

Musician Pharrell Williams; producers Roma Downey and Mark Burnett (A.D. The Bible Continues (2015)). Also: Milky Chance performs.

First Lady Michelle Obama; Matthew Morrison (Broadway musical "Finding Neverland"). Also: The Smashing Pumpkins perform.

Ricky Gervais (Derek (2012)); Jordana Brewster (Furious 7 (2015)). Also: Elle King performs; Boz Scaggs sits in with The Roots.

Michael Douglas (Ant-Man (2015)); Kat Dennings (2 Broke Girls (2011)). Also: St. Vincent performs.

Louis C.K. (Louie (2010)); Sophia Bush (Chicago P.D. (2014)). Also: Who Is Fancy performs.

Julia Louis-Dreyfus (Veep (2012)); Scott Eastwood (The Longest Ride (2015)). Also: Flo Rida performs with The Roots.

Madonna is interviewed and performs; Nikolaj Coster-Waldau (Game of Thrones (2011)).

Kevin James (Paul Blart: Mall Cop 2 (2015)); Vanessa Hudgens (play "Gigi"); illusionist Dan White.

LL Cool J (Lip Sync Battle (2015) and NCIS: Los Angeles (2009)); Rose Byrne (Adult Beginners (2014)). Also: Big Sean performs.

Blake Lively (The Age of Adaline (2015)); Brian Grazer (book "A Curious Mind: The Secret to a Bigger Life"); Nate Bargatze performs stand-up. Also: 'Weird Al' Yankovic sits in with The Roots.

Russell Crowe (The Water Diviner (2014)); Gov. Chris Christie (R-N.J.). Also: Kenny Chesney performs.

Chris Evans (Avengers: Age of Ultron (2015)); comedy troupe Monty Python (Monty Python: The Meaning of Live (2014)). Also: LunchMoney Lewis performs with The Roots.

Chris Pratt (Jurassic World (2015)); Elizabeth Olsen (Avengers: Age of Ultron (2015)). Also: Jimmy presents kids' inventions.

Robert Downey Jr. (Avengers: Age of Ultron (2015)); author Fran Lebowitz. Also: Zac Brown Band performs.

Jeremy Renner (Avengers: Age of Ultron (2015)); Edie Falco (Nurse Jackie (2009)). Also: Tori Kelly performs.

Kristen Wiig (Welcome to Me (2014); Thomas Middleditch (Silicon Valley (2014)). Also: Josh Groban performs.

Scarlett Johansson (Avengers: Age of Ultron (2015)); comic David Steinberg (Inside Comedy (2012)). Also: Blur performs.

Helen Hunt (Ride (2014)); Jesse Eisenberg (play "The Spoils"). Also: My Morning Jacket performs.

Jack Black (The D Train (2015)); author Melissa Rivers ("The Book of Joan"); Jeff Garlin (The Goldbergs (2013)) performs stand-up.

Sofía Vergara (Hot Pursuit (2015)); James Marsden (The D Train (2015)). Also: Fetty Wap performs with The Roots.

Kerry Washington (Scandal (2012)); Jesse Tyler Ferguson (play "The Tempest"). Also: Noel Gallagher's High Flying Birds perform.

Jane Fonda (Grace and Frankie (2015)); Sean 'Diddy' Combs discusses his new cologne 3AM and acquisition of DeLeón tequila. Also: The Vaccines perform; trombonist Jeff Bradshaw sits in with The Roots.

Rock band U2 performs and is interviewed.

Charlize Theron (Mad Max: Fury Road (2015)); author Tom Brokaw ("A Lucky Life Interrupted"). Also: Death Cab for Cutie performs.

Anna Kendrick (Pitch Perfect 2 (2015)); Terry Crews (Brooklyn Nine-Nine (2013)). Also: Nate Ruess performs; Unlocking the Truth sit in with The Roots.

Rebel Wilson (Pitch Perfect 2 (2015)); Rosie Huntington-Whiteley (Mad Max: Fury Road (2015)). Also: Faith No More performs.

Bill O'Reilly (book and series Legends & Lies (2015)). Also Snoop Dogg is interviewed and performs with The Roots.

Queen Latifah (Bessie (2015)); Sam Rockwell (Poltergeist (2015)). Also: A performance from the Broadway cast of "Something Rotten!".

Hugh Jackman (Pan (2015)); Nick Offerman (Me and Earl and the Dying Girl (2015) and book "Gumption"). Also: Janelle Monáe performs with Jidenna

Jamie Foxx (album "Hollywood: A Story of a Dozen Roses) is interviewed and performs with Kid Ink. Also: Carla Gugino (San Andreas (2015)).

David Duchovny (Aquarius (2015)); Jeff Foxworthy (Are You Smarter Than a 5th Grader? (2007)). Also: Pitbull performs; Kevin Eubanks sits in with The Roots.

Dwayne Johnson (San Andreas (2015)). Also: Meghan Trainor is interviewed and performs with John Legend.

Musician Sting (musical "The Last Ship"); Kevin Connolly (Entourage (2015)); scientist Kevin Delaney.

Melissa McCarthy (Spy (2015)). Also: Ed Sheeran performs and is interviewed; Terence Blanchard sits in with The Roots.

Jude Law (Spy (2015)); Bryce Dallas Howard (Jurassic World (2015)). Also: Florence and the Machine perform.

Jason Statham (Spy (2015)); Adrian Grenier (Entourage (2015)); Elayne Boosler performs stand-up.

John Cusack (Love & Mercy (2014)); Chita Rivera (Broadway musical "The Visit"). Also: Ricky Martin performs.

Amanda Seyfried (Ted 2 (2015)); Marlon Wayans (I Can Do That! (2015). Also: Jason Derulo performs with The Roots.

Larry David and Jason Alexander (Broadway play "Fish in the Dark"); Natasha Leggero (Another Period (2013)); Triple Crown-winning jockey Victor Espinoza. Also: Alabama Shakes performs.

Denis Leary (Sex & Drugs & Rock & Roll (2015)); Molly Shannon (Me and Earl and the Dying Girl (2015)). Also: Kacey Musgraves performs.

Whoopi Goldberg (The View (1997)) talks about her line of designer socks; Christian Slater (Mr. Robot (2015)). Also: Of Monsters and Men performs.

David Spade (Joe Dirt 2: Beautiful Loser (2015)); Jennette McCurdy (Between (2015)). Also: A$AP Rocky (A$AP Rocky) performs with The Roots.

Lena Dunham (Girls (2012)); Colin Quinn (Trainwreck (2015) and book "The Coloring Book") performs stand-up and is interviewed.

Aziz Ansari (book "Modern Romance"); Taylor Schilling (Orange Is the New Black (2013)). Also: Adam Lambert performs; Larry Campbell sits in with The Roots.

Billy Crystal (The Comedians (2015)); presidential candidate Jeb Bush. Also: Courtney Barnett performs.

Mark Ruffalo (Infinitely Polar Bear (2014)); Alan Rickman (A Little Chaos (2014)). Also: James Taylor performs.

Colin Farrell (True Detective (2014)); Jason Schwartzman (The Overnight (2015)); Elmo (book "Let's Cook!") fills in as guest announcer and makes sandwiches.

Vince Vaughn (True Detective (2014)); Jim Gaffigan (The Jim Gaffigan Show (2015)). Also: Ryn Weaver performs; Regis Philbin fills in as guest announcer.

Channing Tatum (Magic Mike XXL (2015)); Mo Rocca (CBS News Sunday Morning with Jane Pauley (1979) and My Grandmother's Ravioli (2012)). Also: X Ambassadors perform.

Arnold Schwarzenegger (Terminator Genisys (2015)); Mike Birbiglia (Orange Is the New Black (2013) and Trainwreck (2015)). Also: Major Lazer performs with MØ and DJ Snake.

Mark Wahlberg (Ted 2 (2015)); Chris Colfer (novel "The Land of Stories: Beyond the Kingdoms"). Also: Morrissey performs.

Paul Rudd (Ant-Man (2015)); Jon Glaser (Trainwreck (2015)). Also: Echosmith performs.

LeBron James (Trainwreck (2015)); Tina Fey and Amy Poehler (Sisters (2015)). Also: OMI performs with The Roots; Mark Rivera sits in with The Roots.

Amy Schumer (Trainwreck (2015)); Ian McKellen (Mr. Holmes (2015)). Also: Alan Jackson performs.

Bill Hader (Trainwreck (2015)); Cara Delevingne (Paper Towns (2015)). Also: Years & Years performs.

Ryan Seacrest (Knock Knock Live (2015)); Trevor Noah (The Daily Show (1996)). Also: Tig Notaro performs stand-up and is interviewed.

Adam Sandler (Pixels (2015)); director/author Judd Apatow (book "Sick in the Head") performs stand-up and is interviewed. Also: Giorgio Moroder sits in with The Roots.

Jake Gyllenhaal (Southpaw (2015)); Josh Gad (Pixels (2015)). Also: James Bay performs.

Norm MacDonald (Last Comic Standing (2003)); JoAnna Garcia Swisher (The Astronaut Wives Club (2015)). Also: Jeremih performs with Flo Rida.

Katie Holmes (Ray Donovan (2013)); David Wain and Michael Showalter (Wet Hot American Summer: First Day of Camp (2015)). Also: Sage the Gemini performs with Nick Jonas and The Roots.

Rachel McAdams (True Detective (2014) and Southpaw (2015)); Michael Peña (Ant-Man (2015) and The Vatican Tapes (2015)). Also: Robert Klein performs stand-up and is interviewed.

Tom Cruise (Mission: Impossible - Rogue Nation (2015)); Dick Cavett (Best of Enemies: Buckley vs. Vidal (2015) and book "Brief Encounters"). Also: Ashley Monroe performs; Buddy Guy sits in with The Roots.

Danny DeVito (Taxi (1978)); Simon Pegg (Mission: Impossible - Rogue Nation (2015)). Also: George Ezra performs; Donn Thompson sits in with The Roots.

Jason Segel (The End of the Tour (2015)); Amy Sedaris (BoJack Horseman (2014)). Also: Alessia Cara performs.

Ice-T (Ice & Coco (2015)); Bella Thorne (Scream: The TV Series (2015) and Big Sky (2015)). Also: Ms. Lauryn Hill performs.

Kevin Bacon (Cop Car (2015)); Mel B (America's Got Talent (2006)); Russell Howard performs stand-up.

Meryl Streep (Ricki and the Flash (2015)); Jerrod Carmichael (The Carmichael Show (2015)). Also: Albert Hammond Jr. performs.

Don Rickles (CPO Sharkey (1976)); Kate Mara (Fantastic Four (2015)); magicians Penn Jillette and Teller ("Penn and Teller on Broadway"). Also: Joe Satriani sits in with The Roots.

Ice Cube (Straight Outta Compton (2015)); Mamie Gummer (Ricki and the Flash (2015)). Also: Nathaniel Rateliff and Nathaniel Rateliff & The Night Sweats perform.

Salma Hayek (Kahlil Gibran's The Prophet (2014)); fashion designer Tim Gunn (Project Runway (2004)). Also: Christopher Cross performs.

Steve Buscemi (Park Bench with Steve Buscemi (2014)); Taylor Kitsch (True Detective (2014)); Jon Rineman performs stand-up.

Christopher Meloni (The Diary of a Teenage Girl (2015)); Luke Bryan is interviewed and performs. Also: Boney James sits in with The Roots.

Kristen Stewart (American Ultra (2015)); Jim Belushi (Show Me a Hero (2015)). Also: Yolanda Adams performs with Hezekiah Walker, his choir and The Roots.

Sir Ben Kingsley (Learning to Drive (2014)); Henry Cavill (The Man from U.N.C.L.E. (2015)). Also: Reba McEntire performs.

Paul Giamatti (Straight Outta Compton (2015)); Alicia Vikander (The Man from U.N.C.L.E. (2015)). Also: Robin Thicke performs.

Kevin Spacey (House of Cards (2013)); Keegan-Michael Key (Key and Peele (2012)); Monroe Martin III performs stand-up.

Zac Efron (We Are Your Friends (2015)); humorist Fran Lebowitz. Also: A performance by the Broadway cast of "Amazing Grace".

Taraji P. Henson (Empire (2015)); Edward Burns (Public Morals (2015)). Also: Sam Hunt performs; Sharon Jones sits in with The Roots.

Heidi Klum (Project Runway (2004) and America's Got Talent (2006)); David Oyelowo (Nightingale (2014)). Also: Carly Rae Jepsen performs; Bernard Fowler sits in with The Roots.

Rachel Maddow (The Rachel Maddow Show (2008)); comedian Artie Lange. Also: A performance by The Doobie Brothers with Michael McDonald.

Jason Schwartzman (7 Chinese Brothers (2015)); Tatiana Maslany (Orphan Black (2013)); magician Dan White.

Governor Chris Christie (R-N.J.); Victoria Justice (Naomi and Ely's No Kiss List (2015)). Also: Gary Clark Jr. performs.

Liev Schreiber (Ray Donovan (2013) and Pawn Sacrifice (2014)); Elle Fanning (3 Generations (2015)); Paris train shooting hero Anthony Sadler. Also: Vince Staples performs with Jhené Aiko and The Roots.

Justin Bieber is interviewed and performs. Also: Salman Rushdie (novel "Two Years, Eight Months and Twenty-Eight Nights").

Jason Sudeikis (Sleeping with Other People (2015)); Bel Powley (The Diary of a Teenage Girl (2015)). Also: Brad Paisley performs; Joe Bonamassa sits in with The Roots.

Steve Harvey (Steve Harvey (2012)); Alison Brie (Sleeping with Other People (2015)). Also: Florida Georgia Line performs.