James Marsden

Steve Clark

Katie Holmes

Rachel Wagner

Nick Stahl

Gavin Strick

Bruce Greenwood

Dr. Edgar Caldicott

William Sadler

Newberry

Chad Donella

U.V.

Katharine Isabelle

Lindsay Clark

Tobias Mehler

Andy

Steve Railsback

Officer Cox

Terry David Mulligan

Mr. Clark

Susan Hogan

Mrs. Clark

A.J. Buckley

Charles 'Chug' Roman

Derek Hamilton

Trent

Tygh Runyan

Dickie Atkinson

Crystal Cass

Lorna

Ethan Embry

Allen Clark

Stephen E. Miller

Frankie

Natassia Malthe

Mary Jo Copeland

Doug Abrahams

Security Guard

Robert Moloney

Ferry Guy

Dan Zukovic

Mr. Rooney

David Paetkau

Tom Cox

Jay Brazeau

Principal Weathers

Sarah-Jane Redmond

Miss Perkins

Gillian Barber

Judy Effkin

Peter LaCroix

Mr. Strick

Lynda Boyd

Mrs. Strick

Daniella Evangelista

Daniella

Carly Pope

Abbey

Lalainia Lindbjerg

Kathy

Erin Tougas

Shannon

Ryan Taylor

Ryan - Blue Ribbon

Brendan Fehr

Brendan - Motor Jock

John Destry

Middle-Aged Man

Glynis Davies

Coupon Lady

Andre Danyliu

Roscoe

Stephen J. Lang

John (as Stephen James Lang)

Suzy Joachim

Female Doctor

Christopher R. Sumpton

Screaming Man

Jarred Blancard

Flossing Man

Kate Braidwood

Make-up Girl

Stephen Holmes

Toothbrush Boy

Mark Aviss

Bald Man

Julie Patzwald

Betty Caldicott

Dee Jay Jackson

Assistant Principal

Kendall Saunders

Disrespectful Student

Sean Amsing

Damon (uncredited)

Melanie Angel

Nurse (uncredited)

Christina de Cattani

Laughing Blonde Girl (uncredited)

Fulvio Cecere

Anesthesiologist (uncredited)

Garry Chalk

Coach (uncredited)

Cynde Harmon

Mrs. Atkinson (uncredited)

Tamsin Kelsey

Detrice (uncredited)

Corey Large

Student (uncredited)

Robert Lewis

Moderator (uncredited)

Zuzana Marlow

Shannon's Mother (uncredited)

Judith Maxie

Shadow Woman (uncredited)

Bob Wilde

Shadow Man (uncredited)

Bailee Reid

Chera - Blue Ribbon (uncredited)

Sean Smith

Schoolbus Boy (uncredited)

Clarence Sponagle

Nurses Assistant (uncredited)