Acting

2022

as Herman (voice)

2021

as Self

2019

as Santa Claus (voice)

2017		Broadway: The Next Generation
2017		Love at First Sight as Herman (voice)

2016		Happy Holidays with the Boston Pops
2016		Donald Trump's The Art of the Deal: The Movie as Walter Hoving
2016		American Crime Story (6 episodes) as Dominick Dunne

2013		Teen Titans Go! (4 episodes) as Santa Claus (voice)
2013		Sofia the First (1 episode) as Marshak (voice)

2007

(78 episodes) as Bertram Cooper

2004		Broadway's Lost Treasures II as J. Pierrepont Finch (segment "How To Succeed In Business Without Really Trying")
2004		Los Angeles Plays Itself as Dennis Barlow in The Loved Ones (archive footage)

2003

as Self

2000

(25 episodes) as Edwin O'Malley

1999

as Self - Performer

1998

(1 episode) as Jake (voice)

1997

(1 episode)

1996

(1 episode) as Desaad (voice)

1995

as Grandpa

1993

(5 episodes) as Chap Starfall

1990		Tiny Toon Adventures (1 episode) as Goopy Geer (voice)
1990		Night of 100 Stars III as Self

1987		The Emperor's New Clothes as The Tailor
1987		Hunk as Garrison Gaylord

1986

(13 episodes) as Howler (voice)

1985

(1 episode)

1984		Murder, She Wrote (1 episode) as Marc Faber
1984		Calendar Girl Murders as Nat Couray

1983		Masquerade (1 episode)
1983		Reading Rainbow (1 episode) as Himself - Narrator (voice)

1979		Jack Frost as Jack Frost (voice)
1979		Tales of the Unexpected (1 episode) as Stephen Shaw

1978

as Young Scrooge (voice)

1976

as Young Stuffy (voice)

1971		Great Performances (1 episode) as Self
1971		Alias Smith and Jones (1 episode)

1970		Night Gallery (1 episode)
1970		The Don Knotts Show (1 episode) as Self
1970		The Boatniks as Ensign Garland

1969

(1 episode)

1968		That's Life (32 episodes)
1968		Where Were You When the Lights Went Out? as Waldo

1967		A Guide for the Married Man as Ed Stander
1967		How to Succeed in Business Without Really Trying as J. Pierpont Finch
1967		Oh Dad, Poor Dad, Mamma's Hung You in the Closet and I'm Feeling So Sad as Jonathan

1965		The Loved One as Dennis Barlow
1965		Quick, Before It Melts as Oliver Cromwell Cannon

1964

as Jason Menlow

1963		The Cardinal as Bobby
1963		The Dragon's Tears

1962		The Tonight Show Starring Johnny Carson (1 episode) as Self
1962		The Merv Griffin Show (2 episodes) as Self

1959

(1 episode) as Professor Pearson

1958		Naked City (1 episode) as Richy Wilkin
1958		The Matchmaker as Barnaby Tucker

1956		The Proud and Profane as Casualty
1956		Tony Awards (1 episode) as Self - Nominee (2 episodes) as Self - Performer (2 episodes) as Self - Presenter

1955		Matinee Theater (1 episode)
1955		Alfred Hitchcock Presents (1 episode) as Len (1 episode) as Phil

1954

(319 episodes)

1950

(1 episode) as Self - Mystery Guest