Jane Lynch Gail
Justin Long Alvin (voice)
Cameron Richardson Claire
Jason Lee Dave
Christopher Scott Dancer
David Cross Ian
Beth Riesgraf Mother in Store
Jesse McCartney Theodore (voice)
Mindy Marin Casting
Matthew Gray Gubler Simon (voice)
Debbie Evans Stunts
Perry Dodgson Boom Operator
Mildred Iatrou Supervising Sound Editor
Emily Ferry Property Master
R.J. Kizer ADR Editor
Oliver Muirhead Butler
Gary Burritt Negative Cutter
John Robotham Stunts
Arnon Milchan Executive Producer
Rosero McCoy Choreographer
Natalie Cohen Poolside Girl (uncredited)
Alicia Stevenson Foley Artist
Ross Bagdasarian, Jr. Alvin (singing voice) (uncredited)
David Giammarco Sound Mixer
Doug Jackson Sound Effects Editor
Janice Karman Producer, Theodore (singing voice) (uncredited)
Christopher Lennertz Original Music Composer
Paul Massey Sound Mixer
Dan Haring Lighting Technician
John Murray Foley Supervisor
Peter Lyons Collister Director of Photography
Adriane Lenox Vet
George Fisher Stunts
Melanie Lewis Dancer
Galen Goodpaster First Assistant Sound Editor
Ross Bagdasarian Producer, Characters
David MacMillan Production Sound Mixer
Rebecca Robertson Script Supervisor
Julianne Jordan Music Supervisor
Christopher Flick Foley Editor
Jayden Lund Security Guard
Tim Hill Director
Tom Brown Music Arranger
Charlie Daboub Art Direction
Emily A. Wilson Art Department Coordinator
Cheri Minns Makeup Department Head
Nick Drago Dancer
Kevin Symons Ted
Leigh Shanta Unit Production Manager
Tiara Parker Female Intern 2
Dawn Fintor Foley Artist
Erin Chambers Press Coordinator
Armen Ksajikian Musician
Chris Viscardi Screenplay
Celestina Aladekoba Dancer
Frank Maharajh Barry
Joel Foster Animation
Evelyne Barbier Set Designer
Veronica Alicino Amy
Christian Wood Digital Compositor
Tim Gomillion Sound Recordist
Scott Curtis Foley Editor
Toni-Ann Walker Hair Department Head
David Betancourt Foley Mixer
Michele Imperato Stabile Executive Producer, Unit Production Manager
Craig T. Shordon Set Painter
Anne D. McCulley Set Decoration
Allison Karman Female Intern 1
Todd Shifflett Visual Effects Supervisor
Justin Hammond Lighting Technician
Michele Panelli-Venetis Associate Producer
Karen Rosenfelt Executive Producer