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