The Simpsons Season 36 Episode 1
Bart's Birthday
Bart celebrates the most shocking birthday party of his entire life — one that might just change everyone in Springfield forever.
Guest Stars
Conan O'Brien
Conan O'Brien (voice)
Danny DeVito
Herbert Powell (voice)
Seth Rogen
Seth Rogen (voice)
Maggie Roswell
Luann Van Houten (voice)
Kevin Michael Richardson
Dr. Hibbert (voice)