Joseph Gordon-Levitt
Adam Lerner
Anna Kendrick
Katherine McKay
Bryce Dallas Howard
Rachael
Serge Houde
Richard Lerner
Jessica Parker Kennedy
Jackie
Anjelica Huston
Diane Lerner
Donna Yamamoto
Dr. Walderson
Marie Avgeropoulos
Allison
Luisa d'Oliveira
Agabelle Loogenburgen
Andrea Brooks
Attractive Woman #2
Chilton Crane
Mother on the Bus
Jason Vaisvila
Cute Guy with Dreads
Stephanie Belding
Friendly Nurse
William 'Big Sleeps' Stewart
George
Amitai Marmorstein
Young Person on the Bus
Christopher De-Schuster
Art Gallery Patron
Adrian Glynn McMorran
Bartender
Karen van Blankenstein
Nurse Scott
Richard C. Burton
Thom the Patient
Neil Corbett
Hospital Tech
Stephen Colbert
Self (archive footage) (uncredited)
D. C. Douglas
Live Volcano Reporter (voice) (uncredited)
Cameron K. Smith
Chemo Patient (uncredited)
Tom MacNeill
Office Staff (uncredited)