David Cross

Ian

Jason Lee

Dave

Cameron Richardson

Claire

Jane Lynch

Gail

Justin Long

Alvin (voice)

Matthew Gray Gubler

Simon (voice)

Jesse McCartney

Theodore (voice)

Allison Karman

Female Intern 1

Tiara Parker

Female Intern 2

Kira Verrastro

Female Intern 3

Veronica Alicino

Amy

Beth Riesgraf

Mother in Store

Adriane Lenox

Vet

Don Tiffany

Engineer

Lorne Green

Director

Kevin Symons

Ted

Frank Maharajh

Barry

Greg 'G-Spot' Siebel

Photographer

Oliver Muirhead

Butler

Jayden Lund

Security Guard

Erin Chambers

Press Coordinator

Jillian Warry Barberie

Jillian Reynolds

Chris Classic

DJ

Adam Riancho

French Doll (voice)

Tim Hill

Director

Karen Rosenfelt

Executive Producer

Arnon Milchan

Executive Producer

Michele Imperato Stabile

Executive Producer

Steve Waterman

Executive Producer