Ben Stiller
Tim Dingman

Jack Black
Nick Vanderpark

Rachel Weisz
Debbie Dingman

Christopher Walken
J-Man

Amy Poehler
Natalie Vanderpark

Ariel Gade
Lula Dingman

Sam Lerner
Michael Dingman

Connor Matheus
Nathan Vanderpark

Hector Elias
Eduardo

Blue Deckert
Cal

Terry Bozeman
3M Worker

Brian Reddy
Mr. Parmenter

E.J. Callahan
Bartender

Tom McCleister
Bosco

Daniel Lugo
Italian Minister

Frank Roman
Translator

Randall Bosley
Oscar

Amy Higgins
Vanderpark Nanny

Curtis Andersen
Young Kissing Man

Maricela Ochoa
Dr. Fernandez

Tara Karsian
Lab Assistant

Ted Rooney
Upscale Auctioneer

Douglas Roberts
Downscale Auctioneer

Ashlynn Rose
Girl #2 at Play (Butterfly)

Cayden Boyd
Boy #2 at Play (Wolf)

Kent Shocknek
Newscaster