"Weird Al" Yankovic joins the Comedy Bang. Bang. team, while Kevin Bacon talks about city planning. When Scott finds a pot of gold, he's harassed by a mythical creature.

The Lonely Island shows off their new merchandise and Gil Faizon & George St. Geegland talk about their upcoming Broadway Show.

Tony Hale throws out the first Comedy Bang! Bang! pitch. Scott forgets the meaning of friendship when he decides to play mean pranks on his crew. Plus, a preview for Scott's new game show "You Made Your Bed, Now Lie In it."

Tegan and Sara stop by to dish on their songwriting process, while Scott notices there's something off about the new intern Raymond. Meanwhile, an unexpected visitor gives the home audience acting tips.

T-Pain, Scott, and "Weird Al" write a new single, while Melvin Alberts discusses his alien abduction. Scott makes a scientific breakthrough so he can get more things done. Then Al shows of his new culinary TV show.

Aubrey Plaza tries to seduce Scott, while "Weird Al" and Scott are transported to a different time period by a mysterious stranger. Meanwhile, a dashing adventurer recounts his sexual exploits.

Joe Jonas shows off his curious cellphone replacement, while Scott hosts a memorial for his old friend. Maxwell Keeper discusses his place of employment, and we get a sneak peek of Scott's new movie.

Nathan Fielder stops by the Comedy studio and Scott and "Weird Al" try to get him to freak out. Meanwhile, ice cream entrepreneurs Len & Barry ask Scott to help them come up with a new Comedy Bang! Bang! flavor.

Kristen Schaal shows off her real voice; Paul Rust presents his New No-Nos. It's time for "Weird Al" Yankovic's birthday, but one member of his family isn't very happy about it.

The Comedy Bang! Bang! Crew is visited by some American heroes to try to bring the country back to its moral foundations. Kaley Cuoco stops by and finalizes her will, and lifestyle Coach Karen helps Scott style his inside.

The Comedy Bang! Bang! studio prepares for a calm Halloween, but unbeknownst to Scott and the crew, they are being haunted by a ghoulish spirit. Gillian Jacobs stops by and gets a free cocktail, and Scott shows off his latest film role.

When Scott leaves the show for a new opportunity, Jason Mantzoukas takes over as special substitute host. His first guest? Celebrity Scott Aukerman. Also, legendary soul singer Donny Gary stops by the couch.

Scott and Weird Al throw a party that goes a little overboard. Krysten Ritter visits and plays her favorite party game, and author Gail Summercat gives tips to women in the workplace.

"Weird Al" and the gang cope with the death of a friend, and Allison Janney visits the Comedy Bang Bang set to chat and play a fun game.

Scott's estranged family visits, and Ben Folds drops by to talk about his new start-up business. Plus, "Weird Al" Yankovic shows his new sports documentary, and world-traveler Martin Moreland joins on the couch.

Malin Akerman visits the Comedy Bang! Bang! set and reveals all her deep dark secrets. Meanwhile, Slow Joey tries to juggle his new business venture with falling in love.

Reggie Watts returns to the show just in time to try to prevent a disaster from striking its participants. Meanwhile, Al has a surprising announcement, and Adam Scott drops by to give Scott some assistance.

Scott receives some disturbing news that may mean the end of Comedy Bang! Bang! forever. But before the end, old chums Lord Andrew Lloyd Webber and Fabrice Fabrice stop by to wish the gang goodbye.