Michael Weston
— Bugs (as Michael Rubenstein)
Rachael Leigh Cook
— Beth
David 'Goldy' Goldsmith
— Jack
Fatmir Haskaj
— Wheels (as Xander Skye)
Gerrit Vooren
— Worm
Matt Price
— Sam
Kevin Pinassi
— Chatty
Sam Coppola
— Dr. Felch
Tatyana Yassukovich
— Nurse Helen
Grainger Hines
— Ben
Michael C. Williams
— Lap (as Mike Williams)
Molly Russell
— Nurse Kiels
Ian Bonner
— Dr. Cris Craft
Jack Rudegeair
— Dr. Niebling
Alison Levy
— Dr. Dunn
Ray Abbott
— Guard #1
Ronnie Banks
— Guard #2
John Lee
— Janitor
David Vincent Bobb
— Mental Patient