David Schwimmer
— Dr. Kevin Saunders
Chris Cooper
— Dr. William Larson
Emily Procter
— Laura Pierson
Matt Frewer
— Gerald Krzemien
Terry O'Quinn
— Hersch Lawyer
Kathleen Wilhoite
— Timmi-Jean Lindsey
John Stockwell
— Robert Renaud
Lisa Marie
— Vanessa
Louise Fletcher
— Mrs. Saunders
Kip King
— Barry Biggs
Amanda Foreman
— Lola
Julie McCullough
— 1970's Head Receptionist
Lyle Lovett
— Research Scientist
Rena Riffel
— Swimming Pool Girl
Raphael Sbarge
— Larson's Lawyer
David Wells
— Lewis
Starr Andreeff
— Scrub Nurse
Alan Blumenfeld
— Michael
Lisa Falcone
— Savannah
Barbara Niven
— Cindy
Joleen Lutz
— Saleswoman
Eve Plumb
— Mother
Julie K. Smith
— Dawn
Jennifer Lyons
— Concerned Patient
Frank Novak
— Earl
Betsy Monroe
— 1970s Receptionist
Corey Parker
— (uncredited)
Iva Franks-Singer
— Implant Model
Tiffany Granath
— Sexy Patient
Deirdre O'Connell
— Lacey