Donald Sutherland - Carl
Forest Whitaker - Carter
Marcia Gay Harden - Janet
Linda Cardellini - Mary-Anne
Tony Goldwyn - Frank
Chris Marquette - David (as Christopher Marquette)
Nikki Reed - Tally
Arlen Escarpeta - Jay
Charles Duckworth - Connie
Garcelle Beauvais - Sara
Jonathan Ahdout
Amanda Seyfried - Mouse
Melissa Leo - Louise
Schuyler Fisk - Cicily
Rex Linn - Earl
Davenia McFadden - Felicia
Michael Shannon - Jerry (as Michael J. Shannon)
Todd Tesen - Barry
Terry Rhoads - Ed Hogan
Michael Milhoan - Victim's Father
Jernard Burks - Burly Guy
Lombardo Boyar - Hector
rest of cast listed alphabetically:
Brian Avery - Convenience Store Robber
Rachael Bella - Hailey
Rainbow Borden - Thief
Dan Buran
Andrew Caple-Shaw - Fratboy Rapist
Deanne Carlin - Woman
Gabrielle Christian - Girl
Aasha Davis - Student
Michael Dempsey - Landlord
Lee Garlington - Police Therapist
David Heymann - TV Producer
Blake Hightower - Hakeem
Ali Hillis - Brooke
Calvin Jung - Store Owner
Daniel Hugh Kelly - Don
Kiyano La'vin - Security Guard/Supprt.
Lisa Long - Diane
Neil Mather - Bob
Joy Demichelle Moore - Marcus' Mom
James Morrison - Principal
Dean Norris - Sheriff
Kevin Phillips - Young Teacher
Sydney Walsh - Karen
Chris Warren Jr. - Student
Audrey Wasilewski - Annette
Dallas McKinney - Jimmy (uncredited)