| Person | Type | Job | Role(s) |
|---|---|---|---|
 Arvo Pärt | Crew | Sound | Additional Soundtrack |
 Clint Mansell | Crew | Sound | Music |
 Edward Zwick | Crew | Production | Producer |
 Gary Barber | Crew | Production | Producer |
 Gideon Ponte | Crew | Art | Production Design |
Jeanne McCarthy | Crew | Production | Casting |
Juel Bestrop | Crew | Production | Casting |
Kathleen Chopin | Crew | Production | Casting |
Louise Frogley | Crew | Costume & Make-Up | Costume Design |
Lynda Obst | Crew | Production | Producer |
Mark Warner | Crew | Editing | Editor |
 Matthew Libatique | Crew | Crew | Cinematography |
Richard Vane | Crew | Production | Executive Producer |
 Roger Birnbaum | Crew | Production | Producer |
Rosina Bucci | Crew | Production | Casting |
 Stephen Gaghan | Crew | Directing | Director, Writer |
 Arthur Holden | Cast | Actor | Frank Peabody |
 Benjamin Bratt | Cast | Actor | Wade Handler |
Bill Corday | Cast | Homeless Guy | |
 Bill Rowat | Cast | Actor | Harrison Hobart, Sr. |
Bonnie Mak | Cast | Actress | Waitress |
 Brett Watson | Cast | Actor | Recovering Alcoholic College Student |
Camille Wainwright | Cast | Actress | Ellie Watson (uncredited) |
 Chad Connell | Cast | Actor | Pirates of Penzance |
 Charles Papasoff | Cast | Actor | Recovering Alcoholic Member |
Charles S. Doucet | Cast | Actor | Recovering Alcoholic Member |
 Charlie Hunnam | Cast | Actor | Embry Larkin |
 Christian Paul | Cast | Actor | Recovering Alcoholic Member |
 Claudia Besso | Cast | Actress | Susan Bunwell (uncredited) |
 David Gow | Cast | Actor | Passerby Outside Plum |
 Fred Ward | Cast | Actor | Lieutenant Bill Stayton |
 Gabriel Mann | Cast | Actor | Harrison Hobart |
 Gabrielle Union | Cast | Actress | Amanda Luttrell |
 Giancarlo Caltabiano | Cast | Actor | Trip Hop Inferno: Dante |
 Gillian Ferrabee | Cast | Actress | Susan |
 Howard Bilerman | Cast | Actor | Venture Capitalist |
 Ivan Smith | Cast | Actor | Professor |
 Jodie Resther | Cast | Actress | Girl Singer |
 Joe Cobden | Cast | Actor | Student on Cell Phone |
 John Fallon | Cast | Actor | Trip Hop Inferno: Mime |
 Katie Holmes | Cast | Actress | Katie Burke |
 Kevin Ryder | Cast | Actor | Regular Guy |
 Kwasi Songui | Cast | Actor | Campus Security Officer |
 Mark Camacho | Cast | Actor | Detective Rigney |
 Mark Feuerstein | Cast | Actor | Robert Hanson |
 Melanie Lynskey | Cast | Actress | Mousy Julie (as Melanie Jayne Lynskey) |
 Mike Tsar | Cast | Actor | Detective Kanter |
 Noel Burton | Cast | Actor | Bill |
Paul Lemelin | Cast | Actor | Eager Beaver |
 Philip Bosco | Cast | Actor | Professor Jergensen |
 Philip LeMaistre | Cast | Actor | Trip Hop Inferno: Tortured Soul |
 Rachelle Lefevre | Cast | Actress | Eager Beaver |
 Samir Mallal | Cast | Actor | Indian Guy |
 Shawn Baichoo | Cast | Actor | Trip Hop Inferno: Virgil |
 Sheena Larkin | Cast | Actress | Female Mogul |
 Simon Peacock | Cast | Actor | Tech Recruiter |
 Tony Goldwyn | Cast | Actor | Dr. David Schaffer |
 Will McCormack | Cast | Actor | August |
 Zooey Deschanel | Cast | Actress | Samantha Harper |
 Elizabeth Whitmere | Cast | Actress | Mrs. Burke (uncredited) |
Eric Benton | Cast | Ski Mask Guy (uncredited) | |
 Kim Lambert | Cast | Female Interviewee | |
 Malcolm Travis | Cast | Trip Hop Inferno: Minos | |
 Scott Faulconbridge | Cast | Actor | Jed |
 Jonathan Davis | Cast | Actor | Student choir |
Ryan Kennedy | Cast | Actor | Trip Hop Inferno: Tortured Soul |
 Joan McBride | Cast | Actress | Library Assistant |
 Gianpaolo Venuta | Cast | Actor | Research Assistant (as Gian Paolo Venuta) |
Christopher Dyson | Cast | Actor | Pirates of Penzance |
 Greg Kramer | Cast | Actor | Andre |
Daniel Lee | Cast | Trip Hop Inferno: Wolf | |
Liz MacRae | Cast | Actress | Mrs. Harrison Hobart (as Liz Mac Rae) |
Barry Julien | Cast | Ted | |
 Andrea Sadler | Cast | Actress | Recovering Alcoholic Member |
Robert Burns | Cast | Actor | Archivist |
 Mike Paterson | Cast | Actor | Russian Bear |
John Gilbert | Cast | Pirates of Penzance | |
 Bombyx Du Murier | Cast | Actor | Pirates of Penzance |
 Daniel Murphy | Cast | Actor | Pirates of Penzance |
Richard McConomy | Cast | Cabbie | |
 Marc Gourdeau | Cast | Actor | Client de la tabagie |
 Mark Hauser | Cast | Pirates of Penzance | |
 Jeffrey Wetsch | Cast | Actor | Pirates of Penzance |
Anne-Lise Nadeau | Cast | Actress | Student choir |
Tim Petch | Cast | Katie's Father | |
Ryan Wilner | Cast | Student in Cafeteria | |
Joseph Baugniet | Cast | Trip Hop Inferno: Performer | |
| Person | Type | Job | Role(s) |
