Acting

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1 episode as Chief Thad Green (voice)

2022

4 episodes as Darth Vader (voice)

2021

1 episode as Self (archive footage)

2017

1 episode as Self - Winner

2016

1 episode as Darth Vader (voice) 1 episode as Anakin Skywalker (voice)

2014

1 episode as Self

2012

1 episode as Self - Nominee

2009		The One Show 1 episode as Self - Guest
2009		House 1 episode as Dibala

2008

1 episode as Himself

2005

1 episode as Self - Nominee/Presenter

2004

1 episode as Royal Flush Voice (voice)

2003		Everwood 3 episodes as Will Cleveland
2003		Will & Grace 1 episode as Self

2002

1 episode as Self

1998		Tony Awards 1 episode as Self (archive footage)
1998		Merlin 2 episodes as Rock of Ages
1998		The Simpsons 1 episode as Narrator (voice)

1997		Hallmark Hall of Fame 1 episode as Archibald Thacker
1997		Homicide: Life on the Street 3 episodes
1997		Stargate SG-1 1 episode as Unas (Voice)
1997		The Second Civil War 1 episode as Jim Kalla
1997		Frasier 1 episode as Norman Royster
1997		Touched by an Angel 1 episode as The Angel of Angels

1996

19 episodes as Narrator (voice) (uncredited)

1995		Happily Ever After: Fairy Tales for Every Child 1 episode as King Dakkar (voice)
1995		Under One Roof 6 episodes as Neb Langston
1995		Signs and Wonders 4 episodes as Diamond

1994		The Simpsons 1 episode as Maggie Simpson (voice)
1994		Lois & Clark: The New Adventures of Superman 1 episode as Franklin Stern

1993

1 episode as Defense Attorney Horace McCoy

1992		Shelley Duvall's Bedtime Stories 1 episode as Narrator (Voice)
1992		The American Film Institute Salute to ... 1 episode as Self
1992		The Magic of David Copperfield 1 episode

1991		Pros and Cons 12 episodes as Gabriel Bird
1991		Golden Globe Awards 1 episode as Self - Nominee/Presenter

1990		The Simpsons 1 episode as Moving Man / Serak the Preparer / Narrator (voice)
1990		Gabriel's Fire 22 episodes as Gabriel Bird

1988		Mathnet 1 episode as Chief Thad Greene
1988		L.A. Law 1 episode as Lee Atkins

1987		CBS Schoolbreak Special 1 episode as Detective Robb
1987		Tony Awards 1 episode as Self - Winner/Performer
1987		Mathnet 3 episodes as Chief Thad Green
1987		Highway to Heaven 1 episode as Gabe Wilson

1986

1 episode as Genie / Narrator (voice)

1985		Me & Mom 6 episodes
1985		The Atlanta Child Murders 2 episodes as Major Walker

1983

1 episode as Himself - Narrator (voice)

1981

35 episodes as Host

1980		Tony Awards 9 episodes as Self - Presenter
1980		Guyana Tragedy: The Story of Jim Jones 2 episodes as Father Divine

1979		Paris 13 episodes as Woody Paris
1979		Roots: The Next Generations 7 episodes as Alex Haley

1977

4 episodes as Balthazar

1976

1 episode as Self

1975		Vegetable Soup 57 episodes as Long John Spoilsport
1975		The Mike Douglas Show 1 episode as Self - Co-Host

1974

1 episode as King Lear

1973

13 episodes as Self - Host

1972

2 episodes as Self - Guest

1969		Sesame Street 1 episode
1969		Tony Awards 1 episode as Self - Winner/ Performer
1969		The Mike Douglas Show 11 episodes as Self

1968		The Merv Griffin Show 1 episode as Self
1968		The Tonight Show Starring Johnny Carson 6 episodes as Self

1967

2 episodes

1966

3 episodes as Dr. Lou Rush

1964

1 episode as Reverend Harris Bonham

1963

1 episode

1962		The Defenders 1 episode as Lieutenant Andrews
1962		Lamp Unto My Feet 1 episode