Anthony Hopkins
Dr. Ethan Powell
Cuba Gooding Jr.
Dr. Theo Caulder
Donald Sutherland
Ben Hillard
George Dzundza
Dr. John Murray
John Aylward
Warden Keefer
Vivienne Sendaydiego
Catherine
Rod McLachlan
Guard Anderson
Louanne Stephens
Marjorie Powell
Ajgie Kirkland
Captain Kagona
Pat McNamara
Dr. Josephson
Gary Bristow
Federal Marshall
Tyrone C. Wiggins
Soldier (uncredited)
Kevin-Michael Moore
Prisoners
John Travis
Bartender Mike
Dave Anthony
Gorilla Performers
John Munro Cameron
Gorilla Performers
Jay Caputo
Gorilla Performers
Garon Michael
Gorilla Performers
David St. Pierre
Gorilla Performers
Verne Troyer
Gorilla Performers
Misty Rosas
Gorilla Performers
Linda Harmon
Singer (uncredited)
Darren T. Knaus
Gorilla Vocals (uncredited)
