The classic late night talk show returns with a new host, a new house band and a new studio. Join Jimmy and his guests actor/rapper etc. Will Smith and rock band U2; cameos by Joan Rivers, Joe Namath, Lady Gaga, Mike Tyson; and much more.

Jerry Seinfeld is back on stage. Lady Gaga performs a great song. Kristen Wiig dress like Harry from One Direction.

Justin Timberlake.

Tina Fey. Also: Randy Newman performs and is interviewed.

Billy Joel performs and is interviewed. Also: Chelsea Clinton.

Kevin Bacon; Jeff Musial. Also: Ty Dolla $ign performs; Ann Wilson sits in with The Roots.

Arnold Schwarzenegger (Sabotage (2014); Carson Daly. Also: Vampire Weekend perform.

Daniel Radcliffe wins when he plays Sticky Balls against Jimmy.

Colin Firth (The Railway Man (2013); Chloë Grace Moretz. Also: Nas performs with Q-Tip; John Oates sits in with The Roots.

Anne Hathaway (Rio 2 (2014)); Marlon Wayans (A Haunted House 2 (2014)). Also: Cat Stevens (aka Yusuf Islam) performs.

Kevin Costner (Draft Day (2014)); Danica McKellar. Also: Alan Cumming and the cast of Broadway's "Cabaret" perform; Philip Bailey sits in with The Roots.

Nicolas Cage; Emily VanCamp. Also: KISS perform.

Brian Williams (NBC Nightly News with Lester Holt (1970)); Christina Hendricks (Mad Men (2007)); chef Ilan Hall.

David Duchovny; John Oliver. Also: Rita Ora performs.

Actress Cameron Diaz; comic Jim Gaffigan. Also: Future performs with Pusha T and The Roots.

Dr. Phil McGraw; James Van Der Beek. Also: Courtney Barnett performs; Steven Tyler & Joe Perry sit in with The Roots.

Jamie Foxx; Alan Cumming. Also: Alicia Keys & Kendrick Lamar perform.

Emma Stone; Robinson Cano. Also: Keith Urban performs.

Diane Keaton; Dane DeHaan. Also: David Byrne performs; Daley performs with the Roots. Diane wins at beer Pong with Jimmy. Instead of beer they drink red wine with ice.

David Spade; Sophia Bush. Also: The Both perform.

Andrew Garfield; Mary Lynn Rajskub. Also: Chvrches perform.

Bryan Cranston (Breaking Bad (2008)); Brie Larson (Community (2009)); Kevin Delaney.

Seth Rogen; Matt Bomer. Also: Coldplay perform.

Zac Efron; Guy Fieri; Jadeveon Clowney. Also: Sarah McLachlan performs.

Michael Fassbender; Zoe Saldana. Also: "Fallonventions".

James McAvoy; Amy Schumer. Also: Tune-Yards perform.

Comic Louis C.K.; musicians Neil Young and Jack White; Neil Young performs.

Dolly Parton performs and is interviewed. Also: Taylor Kitsch (The Normal Heart (2014)).

Maya Rudolph; Robert Duvall. Also: Lily Allen performs.

Jennifer Lawrence; Craig Robinson. Also: "A Gentleman's Guide to Love and Murder".

Drew Barrymore; Giovanni Risibi. Also: Elbow perform.

Liam Neeson; Terry Crews. Also: Conor Oberst performs.

Charlize Theron and Steve Higgins take on Josh Hartnett in a game of Charades, also The Roots perform.

Hugh Jackman; Jimmy Page. Also: Barry Gibb performs; Josh Kaufman, the winner of "The Voice", sits in with the Roots.

Amanda Seyfried; Will Ferrell; Chad Smith. Also: Red Hot Chili Peppers perform.

Seth MacFarlane; Thandie Newton. Also: Rascal Flatts perform.

Ricky Gervais (Night at the Museum: Secret of the Tomb (2014)); Ansel Elgort (The Fault in Our Stars (2014)). Also: Miranda Lambert performs.

Jonah Hill; Rahm Emanuel. Also: Soundgarden perform.

Tom Cruise; Kendall and Kylie Jenner. Also: Chrissie Hynde performs with the Roots.

Mike Myers; Neil deGrasse Tyson. Also: Damon Albarn performs.

Channing Tatum; Joshua Toposky; Julian McCullough.

Clint Eastwood. Also: Jack White performs and is interviewed.

Jim Carrey and Jeff Daniels (Dumb and Dumber To (2014)); Taylor Schilling (Orange Is the New Black (2013)). Also: Ed Sheeran performs.

Barbara Walters; June Shannon ("Mama June") and Alana Thompson ("Honey Boo Boo"); Iliza Shlesinger.

Chris Rock (Top Five (2014)); New Jersey governor Chris Christie. Also: Kacey Musgraves performs.

Dave Chappelle. Also: Body Count perform.

Jennifer Lopez performs and is interviewed. Also: Keenen Ivory Wayans.

Kevin Hart (Top Five (2014)). Also: Jimmy Buffett performs and is interviewed.

Rosario Dawson (Top Five (2014)); Jeff Musial. Also: Fun. perform.

George Lopez. Also: Pitbull performs and is interviewed.

Kiefer Sutherland (24: Live Another Day (2010)); Nicole Richie. Also: Crosby, Stills and Nash perform.

Halle Berry (Extant (2014)); Chris Colfer (Glee (2009)). Also: Florida Georgia Line perform.

Kelly Ripa (Live with Kelly and Mark (1988)); Joe Manganiello (True Blood (2008)). Also: Sylvan Esso performs.

Dana Carvey; Hailee Steinfeld (The Keeping Room (2014)). Also: Magic! perform.

Liev Schreiber (Ray Donovan (2013)); Rob Reiner (And So It Goes (2014)); Gabriel Iglesias.

Michael Strahan (Live with Kelly and Mark (1988)); Diane Kruger (The Bridge (2013)). Also: Phish perform.

Cameron Diaz (Sex Tape (2014)); Josh Gad (Wish I Was Here (2014)). Also: Bleachers perform.

Whoopi Goldberg (The View (1997)); Stephen Moyer (True Blood (2008)). Also: Puss n Boots perform.

John Lithgow (The Homesman (2014)); model Miranda Kerr. Also: Jason Mraz performs.

Dan Aykroyd (Get on Up (2014)); Chaz Ebert; Nick Thune (The Breakup Girl (2015)).

Kate Hudson (Wish I Was Here (2014)); Ellar Coltrane (Boyhood (2014)). Also: "Nico and Vinz" perform.

Dwayne Johnson (Hercules (2014)); Mel B (aka Mel B). Also: Chronixx performs.

Robin Wright (House of Cards (2013)); Josh Charles (The Good Wife (2009)). Also: Weezer performs.

Morgan Freeman (The Lego Movie (2014)); Kesha. Jimmy interviews Morgan after they both inhale helium. Also: Tweedy perform.

Jon Hamm (Mad Men (2007); Brit Marling (Babylon (2014)); Martha Stewart.

James Franco; Chadwick Boseman. Also: Jenny Lewis performs.

Vin Diesel; Aubrey Plaza. Also: Will.i.am performs with The Roots.

Heidi Klum (America's Got Talent (2006)); Mike Birbiglia. Also: Temples perform.

Julia Roberts; Andy Cohen; Ron Funches.

Martin Lawrence (Partners (2014)); Jenny Slate (Married (2014)). Also: Aloe Blacc performs.

Helen Mirren (The Hundred-Foot Journey (2014)); director and explorer James Cameron (Deepsea Challenge (2014)). Also: Spoon performs.

Clive Owen (The Knick (2014)); Nina Dobrev (Let's Be Cops (2014)). Also: The Head and the Heart perform.

Megan Fox (Teenage Mutant Ninja Turtles (2014)); Nick Cannon (America's Got Talent (2006)). Also: Wiz Khalifa performs with The Roots; Lester Holt sits in with The Roots.

Will Arnett (Teenage Mutant Ninja Turtles (2014)). Also: Tip 'T.I.' Harris ("T.I. and Tiny: The Family Hustle" (2011)) is interviewed and performs with The Roots.

Jeff Bridges (The Giver (2014)); Ali Larter (Legends (2014), cookbook "Kitchen Revelry"); Andy Woodhull performs stand-up.

Katie Holmes (The Giver (2014)); Chris Hardwick (@midnight (2013)). Also: OneRepublic performs.

Mickey Rourke (Sin City: A Dame to Kill For (2014)); Rob Riggle (Let's Be Cops (2014)). Also: Kings of Leon perform; Ace Frehley sits in with The Roots.

Taylor Swift (The Giver (2014)); Andrew Rannells (Broadway play "Hedwig and the Angry Inch"). Also: Ryan Adams and The Shining perform.

Sylvester Stallone (The Expendables 3 (2014)); Eve Hewson (The Knick (2014)); Last Comic Standing (2003) winner Rod Man performs stand-up.

Jason beats Jimmy at a game of hamster ball race. Jason Statham (The Expendables 3 (2014)); singer Demi Lovato; chef David Chang makes chicken hot wings.

Comedian Bill Cosby; golfers Rory McIlroy and Tiger Woods discuss the Nike Vaper clubs they helped design. Also: Röyksopp and Robyn Carlsson perform.

Pierce Brosnan (The November Man (2014)); Tavi Gevinson (Broadway play "This Is Our Youth"). Also: The Madden Brothers perform.

Musician-actor Jared Leto; Amy Brenneman (The Leftovers (2014)). Also: Thirty Seconds to Mars performs; Tom Bailey sits in with The Roots.

Josh Brolin (Sin City: A Dame to Kill For (2014)); Artie Lange (book "Crash and Burn"); Giada De Laurentiis (Giada at Home 2.0 (2008)) makes veal saltimbocca and cocktails.

Ethan Hawke (Boyhood (2014)); Amy Sedaris (BoJack Horseman (2014)). Also: The Secret Sisters perform.