Self (archive footage) (1 episode)
Himself (archive footage) (1 episode)
Great Uncle Stew (voice)
In Memory Of
Clifford the Big Red Dog (voice)
In Memory Of
Bob Chipeska
In Memory Of
Self - Guest (1 episode)
Paul Hennessy (31 episodes)
Stanley Grubman
Sam Dorian (1 episode)
Dr. Richard Manning (1 episode)
Narrator
Narrator (voice) (1 episode)
Narrator (voice) (1 episode)
Josh
Bob Carter
Mr. Andrew Covington (7 episodes)
Clifford (voice) (130 episodes)
Tom Williams
Self - Interviewee (1 episode)
Self - Narrator (voice) (1 episode)
Christian Therapist
Father Andrews (1 episode)
Dr. David Wheeler (voice) (1 episode)
David Farris
Donald Bridges
Joe Cass
Tim Margolin (1 episode)
Dr. Carter Elston
George Madison (2 episodes)
Chief Warren Kincaid
Bruce Simon Barker
Robert Forrest
Steven Mayer
Tom Maguire
Dr. Wexler
Ted Buchanan (1 episode)
Eugene Grandy (voice) (4 episodes)
Duncan the Bartender
Moses Helper
Ed Chandler
Date #5 (uncredited)
Jonas Ambler
Mike O'Conner (1 episode)
Sheriff Tom McKinsley (1 episode)
Vaughan Cunningham
Stuart Davenport (1 episode)
Paul Hegstrom
Frank Westford (1 episode)
Rick Knowlton
Clarke MacGruder
John Ritter (3 episodes)
Ward Nelson
Jeremy Carlisle
John Ritter (1 episode)
Bill Grant
John Hartman (54 episodes)
Roy Knable
Garry Lejeune / Roger Tramplemain
Inspector Gil (voice) (6 episodes)
Piney (voice)
Ben Healy
Patrick Serreau (5 episodes)
Ray Evans (1 episode)
L. Frank Baum
Ben Hanscom (2 episodes)
Executive Producer
Barney
Zach
Donald Todsen (uncredited)
Dudley Goode
Bob Wilson
Detective Harry Hooperman (42 episodes)
David Royce
Phillip Reed
Judge Harold Benton (uncredited)
Frank Coleman
John Ritter (1 episode)
Jack Tripper (22 episodes)
Danny Loeb
Alan O'Black
Self - Nominee (1 episode)
Self (2 episodes)
Peter Dickinson (voice)
Tom McPherson
Charles Rutledge
Satan (The Devil)
Bubba Newman
Steve Nichols
President Chet Roosevelt
Paul Stallings
Marty Flesh
Dale Riley (1 episode)
Ben Cummins (2 episodes)
Self - Co-Host (2 episodes)
Self (3 episodes)
Jack Tripper (171 episodes)
Franklin Frank
Tom Cole (1 episode)
Reverend Chatfield (1 episode)
Walter Wingate
John 'Johnny' Steiner (1 episode)
Joe Rockwell (1 episode)
John Oleson (1 episode)
Cliff Elgin (1 episode)
Elevator Passenger (uncredited)
Vince Mazuma (1 episode)
Jerry Blocker (1 episode)
Kenny Soames (1 episode)
Private Carter (1 episode)
Bauer
Rev. Matthew Fordwick (17 episodes)
Rider
Priest (uncredited)
Ryan Moore (1 episode)
Mike Welles (1 episode)
Wendell
Coley Smith (1 episode)