Homer the Whopper

S21 E1: In an episode co-written by and featuring the voice of Seth Rogen ("Knocked Up"), Comic Book Guy creates a comic book -- "Everyman" -- whose hero absorbs the power of any comic book he touches. Homer is cast in the lead, and gets physically fit with the help of a personal trainer. But when the trainer leaves for another job, Homer regains the weight he lost, wreaking havoc on the film.