Elijah Wood as Barney Snow

Janeane Garofalo as Dr. Harriman

Roger Rees as Dr. Croft

Joe Perrino as Mazzo

Rachael Leigh Cook as Cassie

George O. Gore II as Billy

Adam LaVorgna as Mike

Oni Faida Lampley as Nurse Bascam

Jeffrey Force as Allie Roon

Janet Paparazzo as Eileen Snow

Christopher Mark Petrizzo as Chris Ronson

Sam Haft as Samuel Ronson

John E. Mack as Willy

Matthew Cavallary as Young Barney

David France as Richard Snow

Joan Levy as Woman in Suburbs

Alice Liu as Nurse Li