Scott tries to pull off the perfect episode with a scientist's invention.

Activist Victor Ramos shamelessly plugs some community program he's heading; Steven Yeun shares his preparations for the inevitable zombie apocalypse; plus, there is compiled footage of Reggie's entire life.

Kevin Smith helps Scott celebrate his birthday; Reggie tries to create a special episode for Scott; a college student with an attitude.

An inspector narrows down the suspects of a murder that occurred in the studio; Jenna Fischer shares a clip from her appearance on the British version of "Comedy Bang! Bang!"

Ellie Kemper is the guest of Scott's dreams but he may blow his chance; feeling altruistic, Scott fixes a neglected school; Jesse Ventura has an important announcement.

A goodbye to a cast member; a poet stops by to share his latest works.

A major disaster forces Scott and Reggie to conserve air in hopes of a last-minute rescue; Nick Offerman transfixes Scott with his mustache; a mysterious woman gives tips on how to be a friendly neighbor.

The discovery that Reggie's dad had a shot at the big-time; Scott goes back to the 1960's to try and change history; Josh Groban gives Scott some constructive criticism; a plate-spinning novelty act is hiding a game-changing secret.

Wayne Coyne of Flaming Lips fame joins Scott as they are visited by the show's accountant, a creepy couple and the scariest of all: the ghost of Scott's former career.

People take drastic measures to get the hottest holiday toy; The Lonely Island provides Christmas spirit.

"Comedy Bang! Bang!" gets a new boss; Tony Hawk gives crew members some advice; a personal tragedy in Scott's life.

"Comedy Bang! Bang!" gets a talk show makeover; Reggie's favorite baseball team; Alison Brie reveals the secrets of her acting process; a German film director discusses his plans to make another film.

Scott debuts a new character; what's new with Reggie.

The new "Comedy Bang! Bang!" secretary; Reggie stars in a new commercial; a visit from the aspiring Honorary Mayor of Hollywood.

Fred Armisen and Scott are up for the same late night talk show hosting job; Reggie's ultimate fantasy is revealed.

Scott and Reggie share their favorite moments from the show; Lizzy Caplan has an important question on her mind; a seedy photographer describes his process; Scott might be getting Catfished.

Patton Oswalt and Scott compete for the same acting role, while a turtle expert is going through an emotional breakdown. We find out Reggie’s real name and witness what unsuspecting bystanders do with an unprotected laptop.

Craig Robinson has a question on his mind; Reggie is taken up to space to battle an alien race; Scott helps renovate homes; a comedy team hides a deadly secret.

A flash forward to the final episode; Zach Galifianakis makes his first appearance since his big accident; characters from past seasons come back to say goodbye; ongoing storylines get resolved; a surprise wedding.

Amber Tamblyn helps celebrate Thanksgiving; Reggie invites some of his favorite comics over for dinner; an orphan returns.