Dan Castellaneta
Homer Simpson / Itchy / Barney / Abe Simpson / Stage Manager / Krusty the Clown / Mayor Quimby / Mayor's Aide / Multi-Eyed Squirrel / Panicky Man / Sideshow Mel / Mr. Teeny / EPA Official / Kissing Cop / Bear / Boy on Phone / NSA Worker / Officer / Santa's Little Helper / Squeaky-Voiced Teen (voice)
Julie Kavner
Marge Simpson / Selma Bouvier / Patty Bouvier (voice)
Nancy Cartwright
Bart Simpson / Maggie Simpson / Ralph / Nelson / Todd Flanders / TV Daughter / Woman on Phone (voice)
Yeardley Smith
Lisa Simpson (voice)
Hank Azaria
Professor Frink / Comic Book Guy / Moe / Chief Wiggum / Lou / Carl / Cletus / Bumblebee Man / Male EPA Worker / Dome Depot Announcer / Kissing Cop / Carnival Barker / Counter Man / Apu / Drederick Tatum / Sea Captain / EPA Passenger / Robot / Dr. Nick / Wise Guy (voice)
Harry Shearer
Scratchy / Mr. Burns / Rev. Lovejoy / Ned Flanders / Lenny / Skull / President Arnold Schwarzenegger / Kent Brockman / Principal Skinner / Dr. Hibbert / Smithers / Toll Booth Man / Guard / Otto / Kang (voice)
Pamela Hayden
Milhouse Van Houten / Jimbo Jones / Rod Flanders (voice)
Tress MacNeille
Sweet Old Lady / Colin / Mrs. Skinner / Nelson's Mother / Pig / Cat Lady / Female EPA Worker / G.P.S. Woman / Cookie Kwan / Lindsey Naegle / TV Son / Medicine Woman / Girl on Phone (voice)
Albert Brooks
Russ Cargill (voice)
Karl Wiedergott
Man / EPA Driver (voice)
Marcia Wallace
Edna Krabappel (voice)
Russi Taylor
Martin Prince (voice)
Maggie Roswell
Helen Lovejoy (voice)
Phil Rosenthal
TV Dad (voice)
Billie Joe Armstrong
Billie Joe Armstrong (voice)
Mike Dirnt
Mike Dirnt (voice)
Tré Cool
Tre Cool (voice)
Joe Mantegna
Fat Tony (voice)
Tom Hanks
Tom Hanks (voice)
David Silverman
Director
Matt Groening
Screenplay
James L. Brooks
Screenplay
Sam Simon
Screenplay
Al Jean
Screenplay
George Meyer
Screenplay
David Mirkin
Screenplay
Mike Reiss
Screenplay
Mike Scully
Screenplay
Matt Selman
Screenplay
Jon Vitti
Screenplay
James L. Brooks
Producer
Matt Groening
Producer
Al Jean
Producer
Richard Sakai
Producer
Mike Scully
Producer
Jay Kleckner
Producer
Peter Gave
Producer
Amanda Moshay
Producer
Felicia Nalivansky
Producer
Matt Orefice
Producer
Nikki Vanzo
Executive Producer
Hans Zimmer
Original Music Composer
John Carnochan
Editor
Dima Malanitchev
Art Direction
Chris Scarabosio
Sound Designer
Tom Myers
Sound Re-Recording Mixer
Ian Maxtone-Graham
Screenplay
Frans Vischer
Layout
Craig Sost
Co-Producer
Rick Moser
Compositors
Edwin Shortess
Compositors
Matthew Schofield
Assistant Director
Anthony DeRosa
Animation
John Pomeroy
Animation
Miae Kim
Compositors
Jeannine Berger
Post Production Supervisor
Richard Manginsay
Layout
Eric Koenig
Layout
Eddie Rosas
Layout
Manny DeGuzman
Layout
Colin Sittig
Compositors
Beth S. Morris
Compositors
Brendan Harris
Compositors
Darrin Drew
Compositors
Sun Jae Lee
Animation
Louie C. Jhocson
Compositors
Nate Lowe
Layout
Gary McCarver
Animation Director
Caroline Cruikshank
Animation
Silvia Pompei
Animation
Dennis Bonnell
Compositors
Juan 'Jo' Luna
Layout
Jay Jackson
Layout
Bingo Ferguson
Compositors
J.C. Wegman
Layout
Jeff Johnson
Layout
Doug Tiano
Compositors
Rufino Camacho
Layout
Ivaylo Anguelov
Layout
Jennifer Moeller
Layout
Andre Medina
Layout
Roberto Casale
Layout
Claudia Katz
Producer
Gwendolyn Yates Whittle
Supervising Sound Editor
Daniel Pinder
Supervising Music Editor
Roger Injarusorn
Editorial Services
Randy Thom
Sound Designer
Josh Gold
Assistant Sound Editor
Mac Smith
Assistant Sound Editor
John Swartzwelder
Screenplay