Bernard 'Bernie' Siegel (8 episodes)
Albrecht Escher (7 episodes)
Rich Schweikart
Judge Clemmens (1 episode)
Tom Gaines
Judge Thornton (1 episode)
William Voight (1 episode)
Lucas Nash (2 episodes)
President Edgar Whitman (1 episode)
Elliot Lambeau (1 episode)
Henry Roarke (6 episodes)
Bernie (1 episode)
Avery Goodloe CFO
Kenneth Malverne (2 episodes)
Pat Gerry
Gary Cooper (1 episode)
Rich Schweikart (15 episodes)
Sanders
CIA Director Skinner (1 episode)
Dr. Alan Cassidy
Richard Nelson (1 episode)
Gerald Lydon (1 episode)
Dr. Michael Rubin (1 episode)
Jack Quayle (1 episode)
Tommy Segara (2 episodes)
Professor Hearst (5 episodes)
Principal Pratt
Artie (1 episode)
Don Taylor (1 episode)
Dr. Anthony Woodel (1 episode)
Walter Ernst (1 episode)
Minister Fawkes (2 episodes)
Paul Wolfowitz
D.A. Lester Rivers (1 episode)
Dr. Sidney Buckman (1 episode)
Ben Wells
Leonard Ralston (4 episodes)
Paul Ramont (2 episodes)
Lance Wagner (1 episode)
Lance Marshall (1 episode)
Dr. Bernard Krump (1 episode)
Dr. Norton (1 episode)
DEA Agent Riddick (1 episode)
Dr. Morris Lancaster (1 episode)
Dr. Levy
U.S. Attorney Greg Mitchell (1 episode)
Ray Henry (2 episodes)
Prof. Jurgen
Robert Saxon (1 episode)
Gil Byrnes (31 episodes)
Nick Brody
Dr. Peter Voss (1 episode)
Prof. Alan Berger (1 episode)
Doctor Stevens
Bill McMurtrey
Neil Burnside (2 episodes)
David Kotlowitz (4 episodes)
Skippy Deere (2 episodes)
Joe Hoffman
Frank Caldwell
Massarelli
Vinnie Ventola
Screenplay Writer
Steven Hoffman
Dr. Jerry Santana (1 episode)
Leeson
David Joseph Levitsky (1 episode)
Orin Fell
The Director
Greg Rossi
Dr. Tony Menzies (1 episode)
Prof. John Gallagher (1 episode)
Tom Rampy
Michael
Dr. Weitzman
Jerry Renfrew
Bob Tanner
Mason Baylor
C.R. Heaton (1 episode)
Yorgi Kostov (1 episode)
Joseph Pulitzer
Marek
Joe Calvo (28 episodes)
Frankie
Danny (uncredited)