Dr. Slavkin O'Hara
Michael Sheen
Patricia Herman
Toni Collette
Young Billy Herman
Jamie Johnston
Tim Herman
Mark MacDonald
Tom Herman
Mickey MacDonald
Jimmy Herman
Cameron Kennedy
Alice O'Hara
Kate Hewlett
Delivery Room Doctor
Kevin Hare
Brian the Bully
Austin Macdonald
Miss Abda
Mishu Vellani
Malcom's Dad / Nurse Stewart
Aaron Abrams
Henry James Herman
Jason Spevack
Audrey O'Hara
Samantha Weinstein
Kindergarten Teacher
Melyssa Ade
Oprah
Oprah Winfrey
Stan Herman
Frank Moore
Dr. Gunther Flowers
Paul Braunstein
Young Patricia Herman
Hannah Brigden
Mother Herman
Sarah Orenstein
Producer
Sukee Chew
Executive Producer
Julia Roberts
Lisa Roberts Gillan
Director of Photography
Daniel Moder
Director
Dennis Lee
Production Design
Robert Pearson
Editor
Joan Sobel
Philip Rose
Deepak Nayar
Art Direction
Peter Grundy
Hair Department Head
Lucy M. Orton
Sound Mixer
Jonathan Wales
Sound Editor
Chris Terhune
Makeup Department Head
Geralyn Wraith
Original Music Composer
Simon Taufique
Set Decoration
Jim Lambie
Casting
Stephanie Corsalini
Costume Design
Debra Hanson
Tina Gerussi
David Torn
Daniel Norwick
Sound Re-Recording Mixer
Jason Gaya
Screenplay