Katie Holmes
Rachel Wagner
Bruce Greenwood
Dr. Edgar Caldicott
Katharine Isabelle
Lindsay Clark
Steve Railsback
Officer Cox
Terry David Mulligan
Mr. Clark
A.J. Buckley
Charles 'Chug' Roman
Tygh Runyan
Dickie Atkinson
Natassia Malthe
Mary Jo Copeland
Doug Abrahams
Security Guard
Jay Brazeau
Principal Weathers
Sarah-Jane Redmond
Miss Perkins
Gillian Barber
Judy Effkin
Daniella Evangelista
Daniella
Ryan Taylor
Ryan - Blue Ribbon
Brendan Fehr
Brendan - Motor Jock
John Destry
Middle-Aged Man
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
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)