Steve Zahn as Wayne Lefessier

Jack Black as J.D. McNugent

Jason Biggs as Darren Silverman

Amanda Peet as Judith Fessbeggler

Amanda Detmer as Sandy

R. Lee Ermey as Coach

Neil Diamond as Self

Kyle Gass as Bar Dude

Andrew McIlroy as Waiter

Norman Armour as Minister

Colin Foo as Old Man

Christopher Logan as Vageet

Esme Lambert as Raccoon Woman

Max Fomitchev as Mime

Tony Parsons as Newscaster

Oscar Goncalves as Man

Lillian Carlson as Mother Superior

Mark Aaron Wagner as Luigi

Stephen Chang as Thai Referee

Eliza Norbury as Wayne's Mom

Michael Roberds as Doctor

Sean Owen Roberts as Wong

Ken Camroux-Taylor as Warren

Lowela Jotie as Cheerleader

Odessa Munroe as Hooker

Tracy Trueman as Hooker

Devin Douglas Drewitz as Young Wayne

Carly McKillip as Cute Girl

Carla Boudreau as Beautiful Woman

Biski Gugushe as Cop At Darren's House

Steven McMichael as Josh

Dennis Dugan as Referee

Larry Lam as Thai Kickboxer

Brett Armstrong as Brett

Patrick Pfrimmer as Clayton

Frank L. Frazier as Bouncer (as Frank Frazier)

Eli Ranger as Young Darren

Ivan Jurcev as Young J.D.

Phil Trasolini as Referee on Sideline

David Neale as Cop at Police Station

Mary Ann Skoll as Cop at Police Station

Gus Lynch as Security Guard

Blake Stovin as Wayne's Dad

Brittany Moldowan as Little Girl

Katlyn Alexandra Ducharme as Little Girl

Jared Van Snellenberg as Belston

David B. Levinson as Heston (as David Levinson)

Frank Hache as Abe

Nicole Robert as Nun

Nancy J. Lilley as Bearded Lady

David Mylrea as Dogfaced Boy

Dario Delacio as Strong Man (as Dario Delaco)

Eleana Johnson as Old Lady

Margaret Ryan as Old Lady

Shaz Bennett as Cheerleader (as Shannon Bennett)

Theresa Coombe as Cheerleader

Leigh Hilary as Cheerleader

Jennifer Armstrong as Cheerleader

Linda Bernath as Cheerleader