Cast and credits of The Simpsons: 138th Episode Spectacular!

David Silverman

Dan Castellaneta
Matt Groening / Homer Simpson / Krusty the Klown / James Bond / Robotic Richard Simmons (voice)

Julie Kavner
Marge Simpson (voice) (archive footage)

Nancy Cartwright
Bart Simpson (voice) (archive footage)

Yeardley Smith
Lisa Simpson (voice) (archive footage)

Hank Azaria
TV Announcer / Postal Worker / Race Banyon / Network Executive #2 / Apu / Indian Man in Film (voice)

Harry Shearer
Waylon Smithers / Montgomery Burns / Network Executive #1 / Ernst Stavro Blofeld / Ned Flanders (voice) (archive footage)

Buzz Aldrin
Self (voice) (archive footage)

Glenn Close
Mona Simpson (voice) (archive footage)

Phil Hartman
Troy McClure / Lionel Hutz (voice)

Pamela Hayden
Milhouse Van Houten / Jimbo Jones / Others (voice) (archive footage)

Tress MacNeille
Agnes Skinner / Others (voice) (archive footage)

Liz Georges
Maggie Simpson (voice) (archive footage) (uncredited)