Vince Vaughn

Peter La Fleur

Christine Taylor

Kate Veatch

Ben Stiller

White Goodman

Rip Torn

Patches O'Houlihan

Justin Long

Justin

Stephen Root

Gordon

Joel David Moore

Owen

Chris Williams

Dwight

Alan Tudyk

Steve the Pirate

Missi Pyle

Fran Stalinovskovichdaviddivichski

Jamal Duff

Me'Shell Jones

Gary Cole

Cotton McKnight

Jason Bateman

Pepper Brooks

Hank Azaria

Young Patches O'Houlihan

Lance Armstrong

Lance Armstrong

Chuck Norris

Chuck Norris

David Hasselhoff

German Coach

William Shatner

Dodgeball Chancellor

Julie Gonzalo

Amber

Trever O'Brien

Derek

Cayden Boyd

Timmy

Rusty Joiner

Blade

Kevin Porter

Lazer

Brandon Molale

Blazer

Suzy Nakamura

Gordon's Wife

Lori Beth Denberg

Martha Johnstone

Curtis Armstrong

Mr. Ralph

Amy Stiller

Keno Waitress

Jim Cody Williams

Weird Guy with Monster Truck

Scarlett Chorvat

Joyce

Matt Levin

Casino Worker #1

Rawson Marshall Thurber

Obnoxious Las Vegas Homophobe

Tim Soergel

Frustrated Cougar #2

Candice Michelle

Cheerleader (uncredited)

Patton Oswalt

Video Store Clerk on Phone (uncredited)