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Tim Allen

as

Jack Sheppard

Courteney Cox

as

Marsha Holloway

Chevy Chase

as

Dr. Grant

Spencer Breslin

as

Tucker Willams...

Kevin Zegers

as

Connor Shepard...

Kate Mara

as

Summer Jones /...

Michael Cassidy

as

Dylan West / H...

Ryan Whitney

as

Cindy Collins ...

Rip Torn

as

Larraby

Cornelia Guest

as

Cindy's Mom

Ashton Moio

as

Halloween Bully

Hunter Aarniok...

as

Prince

Thomas F. Wils...

as

Dylan's Teacher

Ridge Canipe

as

Mean Bully

Danny McCarthy

as

Meaner Bully

David L. Lander

as

Wendy's Employ...

Lauren Sánchez

as

Reporter

Willie Garson

as

Dick

Jane Hajduk

as

Researcher Tay...

Tommy Chang

as

Martial Arts I...

Zoe Doyle

as

Researcher

Tim Nasiopoulos

as

Large Agent

Deanna DeLisle

as

Cheerleader

Meg Anderson

as

Cheerleader

Kendra Rose Mo...

as

Cheerleader

Aaron Abrams

as

Corporal Lipsc...

Stacey Alfano

as

Stefanie (uncr...

Nick Baga

as

Fat Swimmer (u...

Alexis Bledel

as

Ace (uncredite...

Darryl Dinn

as

Lab Researcher...

Allison Gordon

as

Girl with Big ...

Sadey Paige Ni...

as

Kid In Pool (u...

Andrea Savo

as

Carmen / Big h...