Katie Holmes

Katie Burke

Benjamin Bratt

Wade Handler

Charlie Hunnam

Embry Larkin

Zooey Deschanel

Samantha Harper

Fred Ward

Lieutenant Bill Stayton

Mark Feuerstein

Robert Hanson

Melanie Lynskey

Mousy Julie (as Melanie Jayne Lynskey)

Philip Bosco

Professor Jergensen

Gabriel Mann

Harrison Hobart

Will McCormack

August

Gabrielle Union

Amanda Luttrell

Greg Kramer

Andre

Gillian Ferrabee

Susan

Barry Julien

Ted

Tony Goldwyn

Dr. David Schaffer

Scott Faulconbridge

Jed

Vanessa Petch

Young Katie

Victoria Petch

Young Katie

Kevin Ryder

Regular Guy

Rachelle Lefevre

Eager Beaver

Paul Lemelin

Eager Beaver

Simon Peacock

Tech Recruiter

Howard Bilerman

Venture Capitalist

Mark Camacho

Detective Rigney

Mike Tsar

Detective Kanter

Robert Burns

Archivist (as Rob Burns)

Kim Lambert

Female Interviewee

Alicia Westelman

Girl Singer

Jodie Resther

Girl Singer

Bonnie Mak

Waitress

Joe Cobden

Student on Cell Phone

Kwasi Songui

Campus Security Officer

Jay Lavalley

Campus Security Officer (as Jay LaVallée)

Arthur Holden

Frank Peabody

Brett Watson

Recovering Alcoholic College Student

Noel Burton

Bill

Bill Rowat

Harrison Hobart, Sr.

Liz MacRae

Mrs. Harrison Hobart (as Liz Mac Rae)

Richard McConomy

Cabbie

Bill Corday

Homeless Guy

Gianpaolo Venuta

Research Assistant (as Gian Paolo Venuta)

Sheena Larkin

Female Mogul

Ivan Smith

Professor

Mike Paterson

Russian Bear

Samir Mallal

Indian Guy

David Gow

Passerby Outside Plum

Tim Petch

Katie's Father

Ryan Wilner

Student in Cafeteria

Charles S. Doucet

Recovering Alcoholic Member (as Charles Doucet)

Charles Papasoff

Recovering Alcoholic Member

Andrea Sadler

Recovering Alcoholic Member

Christian Paul

Recovering Alcoholic Member

Shawn Baichoo

Trip Hop Inferno: Virgil

Ryan Kennedy

Trip Hop Inferno: Tortured Soul

Philip LeMaistre

Trip Hop Inferno: Tortured Soul

Giancarlo Caltabiano

Trip Hop Inferno: Dante

Joseph Baugniet

Trip Hop Inferno: Performer

John Fallon

Trip Hop Inferno: Mime

Daniel Lee

Trip Hop Inferno: Wolf

Malcolm Travis

Trip Hop Inferno: Minos

Bryanne Hastings

Trip Hop Inferno: Performer

Joan McBride

Library Assistant

Aaron Baril

Student choir

David Benson

Student choir

Chris Burrage

Student choir

Jonathan Davis

Student choir

Jon Day

Student Choir

Benjamin Kwong

Student choir (as Ben Kwong)

Kris Epps

Student choir

Owen Meyers

Student choir

Nathaniel Misri

Student choir

Dantonio Pisano

Student choir

David Podgorski

Student choir

Mark Barter

Student choir

Mark Biunno

Student choir

Padraig Buttner-Schnirer

Student choir

Chris Forbes

Student choir

Fred Issid

Student choir

Andrew Mangal

Student choir

Nick Roy

Student choir

Jonathan Stewart

Student choir

Si-Wai Francis Zih

Student choir (as Si-Wai "Francis" Zih)

Ahad Sianati

Student choir

Raffael Cavaliere

Student choir

Marika Anthony-Shaw

Student choir

Annesley Black

Student choir

Marie Claude Harvey

Student choir

Amelia McMahon

Student choir

Tobie Miller

Student choir

Anne-Lise Nadeau

Student choir

Julie Paquet

Student choir

Martine Poirier

Student choir

Fanny Quenneville

Student choir

Sahra Ucar

Student choir

Shannon Simpson

Student choir

Wing-Chan "Emily" Chung

Student Choir

Marie-Noel Daignault

Student choir

Nancy Duncan

Student choir

Doherty Caitlin

Student choir

Talya Grumberg

Student choir

Rachel Moody

Student choir

Jessica Muirhead

Student choir

Bohdanna Novak

Student choir

Gael O'Shaughnessy

Student choir

Iwan Edwards

Choir Conductor

Shannon Cohen

Pirates of Penzance

Zosia Bornik

Pirates of Penzance

Michele Tredger

Pirates of Penzance

Erica Danya Goldblatt

Pirates of Penzance

Daniel Murphy

Pirates of Penzance

Chad Connell

Pirates of Penzance

Christopher Dyson

Pirates of Penzance

Eric Biunno

Pirates of Penzance

Andrea Shuster

Pirates of Penzance

Edward Lafferty

Pirates of Penzance

Sherry O'Connell

Pirates of Penzance

Nathalie Beaudoin

Pirates of Penzance

Emily Lamarche

Pirates of Penzance

Andrew Burr

Pirates of Penzance

Mark Hauser

Pirates of Penzance

Jeffrey Wetsch

Pirates of Penzance

Sacha Medine

Pirates of Penzance

Eli Udell

Pirates of Penzance

John Gilbert

Pirates of Penzance

Bombyx Du Murier

Pirates of Penzance

Marc Gourdeau

Client de la tabagie

Eric Benton

Ski Mask Guy (uncredited)

Claudia Besso

Susan Bunwell (uncredited)

Josh Kimmel

Grieving Student (uncredited)

Abby Tenenbaum

Student (uncredited)

Camille Wainwright

Ellie Watson (uncredited)

Elizabeth Whitmere

Mrs. Burke (uncredited)