Dave Seville
Jason Lee
Dave
Antti Jaakola
Ian
David Cross
Gail
Jane Lynch
Ian
Petri Hanttu
Claire
Cameron Richardson
Claire
Sara Welling
Alvin (voice)
Justin Long
Gail
Ella Pyhältö
Simon (voice)
Matthew Gray Gubler
Alvin
Jon-Jon Geitel
Theodore (voice)
Jesse McCartney
Simo
Petrus Kähkönen
Female Intern #1
Allison Karman
Tero
Samuel Harjanne
Amy
Veronica Alicino
Female Intern #2
Tiara Parker
Voice
Antti LJ Pääkkönen
Ted
Kevin Symons
Voice
Aku Laitinen
Vet
Adriane Lenox
Mother in Store
Beth Riesgraf
Greg Siebel
Female Intern #3
Kira Verrastro
Engineer
Don Tiffany
Eisaku Imura
Director
Lorne Green
Alvin Sevile
Olaf Reichmann
Theodore Sevile
Rainer Fritzsche
Barry
Frank Maharajh
Security Guard
Jayden Lund
Dancer (as Alexis A. Boyd)
Alexis Boyd
Dancer (as Kyndra 'Binkie' Reevey)
Kyndra Reevey
Concert Guest 'Cowboy'
Jay Bird
Oliver Muirhead*
Poolside Girl
Natalie Cohen
Boy at the Grocery Store
Kevin Fung
Press Coordinator
Erin Chambers
Dancer
Kevin Fisher
Herself
Jillian Barberie
Spanish Doll (voice)
Axel Alba
Ian
David A. Cross
Photographer
Greg 'G-Spot' Siebel
Butler
Oliver Muirhead
Choreographer
Rosero McCoy
Dancer
Criscilla Anderson
DJ
Chris Classic
French Doll (voice)
Adam Riancho
Dancer
Tucker Barkley
Dancer
Celestina
Dancer
Laura Edwards
Emmanuel Garijo
Mathias Kozlowski
Dancer
Celestina Aladekoba
Alexis Tomassian
Espen Sandvik
Dancer
Christopher Scott
Erik Skøld
Dancer
Miss Prissy
Stig Henrik Hoff
Dancer
Bryan Gaw
Dancer
Michelle Maniscalco
Ingrid Bolsø Berdal
Dancer
Nick Drago
Christian Skolmen
Dancer
Melanie Lewis