Acting

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0 episodes

2021

1 episode as Self (archive footage)

2018

1 episode as Himself (archive footage)

2003		TV Land Awards: A Celebration of Classic TV 1 episode
2003		Late Night with Conan O'Brien 1 episode as Self - Guest

2002		8 Simple Rules 31 episodes as Paul Hennessy
2002		The View 2 episodes as Self
2002		Breaking News 1 episode
2002		Scrubs 1 episode as Sam Dorian
2002		Wednesday 9:30 (8:30 Central) 1 episode
2002		Law & Order: Special Victims Unit 1 episode as Dr. Richard Manning

2001		Nature 1 episode as Narrator (voice)
2001		The Early Show 1 episode as Self
2001		TV Funhouse 1 episode as Narrator (voice)

2000		Intimate Portrait 1 episode as Self - Interviewee 1 episode as Self - Narrator (voice)
2000		Felicity 7 episodes as Mr. Andrew Covington
2000		Clifford the Big Red Dog 130 episodes as Clifford the Big Red Dog (voice)
2000		Family Law 1 episode as Father Andrews
2000		Batman Beyond 1 episode as Dr. David Wheeler (voice)
2000		Chicago Hope 1 episode

1999		Touched by an Angel 1 episode as Sheriff Tom McKinsley
1999		Veronica's Closet 1 episode as Tim Margolin

1998		E! True Hollywood Story 4 episodes
1998		Ally McBeal 2 episodes as George Madison

1997		Buffy the Vampire Slayer 1 episode as Ted Buchanan
1997		King of the Hill 4 episodes as Eugene Grandy (voice)
1997		Over the Top 1 episode as Justin
1997		LIVE with Kelly and Mark 1 episode

1996		Touched by an Angel 1 episode as Mike O'Conner
1996		Wings 1 episode as Stuart Davenport

1995

1 episode as Frank Westford

1994

3 episodes as John Ritter

1993

1 episode as John Ritter

1992		Hearts Afire 54 episodes as John Hartman
1992		Fish Police 6 episodes as Inspector Gil (voice)
1992		Martin & Lewis: Their Golden Age of Comedy 3 episodes as Self

1991		Anything But Love 5 episodes as Patrick Serreau
1991		The Cosby Show 1 episode as Ray Evans

1990		It 2 episodes as Ben Hanscom
1990		Muppet Babies 1 episode

1987		Hooperman 42 episodes as Detective Harry Hooperman
1987		Golden Globe Awards 1 episode as Self - Nominee

1986		Life with Lucy 1 episode as John Ritter
1986		Entertainment Tonight 1 episode as Self

1984		Three's a Crowd 22 episodes as Jack Tripper
1984		The Bob Hope Show 1 episode as Self

1983		The Love Boat 2 episodes as Ben Cummins
1983		Life's Most Embarrassing Moments 1 episode as Self - Host
1983		Golden Globe Awards 2 episodes as Self

1979

1 episode

1978

2 episodes as Self - Co-Host

1977		The Love Boat 1 episode as Dale Riley
1977		The Mike Douglas Show 3 episodes as Self
1977		The Tonight Show Starring Johnny Carson 9 episodes as Self
1977		Three's Company 171 episodes as Jack Tripper
1977		Hawaii Five-O 1 episode as Mike Welles

1976		Rhoda 1 episode as Jerry Blocker
1976		Doc 1 episode
1976		Starsky & Hutch 1 episode as Tom Cole

1975		The Rookies 1 episode
1975		The Mary Tyler Moore Show 1 episode as Reverend Chatfield
1975		The Streets of San Francisco 1 episode as John 'Johnny' Steiner
1975		Barnaby Jones 1 episode as Joe Rockwell
1975		Petrocelli 1 episode as John Oleson
1975		The Bob Crane Show 1 episode
1975		Great Performances 1 episode as Richard
1975		Mannix 1 episode as Cliff Elgin
1975		Rhoda 1 episode as Vince Mazuma

1974		The Bob Newhart Show 1 episode as Dave
1974		Owen Marshall: Counselor at Law 1 episode as Greg
1974		Kojak 1 episode as Kenny Soames

1973		MAS*H 1 episode as Private Carter
1973		Medical Center 1 episode as Ronnie

1972

17 episodes as Rev. Matthew Fordwick

1971

1 episode as Ryan Moore

1970

1 episode as Coley Smith