2014		BoJack Horseman (1 episode) as Ziggy Abler (voice)
2014		Late Night with Seth Meyers (1 episode) as Self

2012

(1 episode) as Self

2010		Pound Puppies (1 episode) as Buddy (voice)
2010		The Green Room with Paul Provenza (1 episode) as Self

2006

(2 episodes) as Miles Tunnicliff

2005

(1 episode) as Kris

2003		Two and a Half Men (1 episode) as Stan
2003		Las Vegas (1 episode)

2002		Presidio Med (1 episode)
2002		The Dead Zone (1 episode) as Jack Jericho
2002		George Lopez (1 episode)

2001		Revealed with Jules Asner (1 episode)
2001		Alias (1 episode) as Mitchell Yaeger
2001		Dinner for Five (2 episodes)

2000

(45 episodes) as Richard Lewis

1999

(1 episode) as Sportsman Larry (voice) (1 episode) as Sportsman Larry

1998		V.I.P. (1 episode) as Ronald Zane
1998		Hercules (0 episodes) as Neurosis

1997		Hiller and Diller (18 episodes) as Neil Diller
1997		The View (6 episodes) as Self

1996		7th Heaven (9 episodes) as Richard Glass
1996		The Daily Show (8 episodes) as Self

1995		MADtv (1 episode) as Self
1995		A.J.'s Time Travelers (5 episodes) as Edgar Allan Poe
1995		Dr. Katz, Professional Therapist (1 episode)
1995		Happily Ever After: Fairy Tales for Every Child (1 episode) as Old Beggar (voice)

1993		Late Night with Conan O'Brien (5 episodes) as Self - Guest
1993		Daddy Dearest (13 episodes) as Steven Mitchell
1993		TriBeCa (7 episodes)

1992		The Larry Sanders Show (1 episode) as Richard Lewis
1992		The Tonight Show with Jay Leno (1 episode)

1989		The Simpsons (1 episode) as Golem (voice)
1989		Tales from the Crypt (1 episode) as Vern
1989		Anything But Love (56 episodes) as Marty Gold

1987

(7 episodes) as Richard Breskin

1986

(1 episode) as Self

1962

(2 episodes) as Self

1953

(1 episode) as Self (archive footage)

1993

… Creator