John Ralston

as Clark

as Professor Cleary · 2 episodes

as Christopher Parsons · 1 episode

as Werner

as George Venturi

as Dr. Modan

as MCRN Admiral · 1 episode

as Derek Longbrake · 6 episodes

as William Rathcart

as FDA Chairman

as Whit Randolph · 2 episodes

as Tom O'Neill

as Greg Dale

as Gregor

as Mr. Chandler · 1 episode

as Paul · 2 episodes

as MacGregor

as Stevens

as Detective Jakobsson

as Stuart Wells

as Reuben

as Tom Miller

as Richard

as Walter "Walt" Jackson

as John Buckhout

as Donald Adams · 1 episode

as Burt

as Lucy's Father

as Joel Coleman · 1 episode

as Bill

as Mr. Miles Hollingsworth II

as George

as Robert Bryce · 3 episodes

as Detective Mike

as Andrew Pederson

as Sasha Antonov · 10 episodes

as Thomas Novak · 1 episode

as John Wexford

as Danny McClure · 10 episodes

as Dr. Joseph Mars · 1 episode

as Walter · 2 episodes

as George Venturi

as William Rivers

as William Rivers · 1 episode

23 episodes

as Mitch Deerfoot · 1 episode

as Matt Hawkins

as Dr. William Shaw

as Ming the Merciless · 21 episodes

as Oskar

as Lucius · 26 episodes

as Quentin Baxter

1 episode

as Dr. Garth Bender

as Jack Avenir

as George Venturi · 70 episodes

as Paul Keaton

as Jason Sloan

as Len Taft · 2 episodes

as Richard Carroll

as Steve 42

1 episode

as Frank Sinatra

as Elliott

as Mr. Miles Hollingsworth II · 2 episodes

as Carl · 1 episode

as Mr. Borquin

as Mulcahy's Date

as David Delaney

1 episode

as Mr. White

as D.A. Barry Fenley

as Jack Berg · 32 episodes

as Riley Del Deegan · 1 episode

as Airport Gunman

as Dr. Raymond Fuchs / Stephen · 1 episode

as Sullivan Bates · 1 episode

1 episode

Associate Producer