Acting

2023		Arnold (2 episodes) as Self
2023		History of the World: Part II (1 episode) as Czar Nicholas

2022		StoryBots: Answer Time (1 episode) as Giuseppe
2022		Sherri (1 episode) as Self - Guest
2022		Little Demon (10 episodes) as Satan (voice)

2020

(1 episode) as Self

2019

(1 episode) as Self (1 episode)

2018

(2 episodes) as Dr. Wexler

2015

(1 episode) as Self - Guest

2014		Last Week Tonight with John Oliver (1 episode) as Chemist
2014		Deadbeat (1 episode) as Giuseppe Monamocce
2014		Late Night with Seth Meyers (2 episodes) as Self
2014		The Tonight Show Starring Jimmy Fallon (2 episodes) as Self

2012

(1 episode) as Bruce Davis (archive footage)

2007

(2 episodes) as Self

2005		Made in Hollywood (1 episode) as Self
2005		It's Always Sunny in Philadelphia (162 episodes) as Frank Reynolds
2005		The Late Late Show with Craig Ferguson (2 episodes) as Self

2004

(1 episode) as Emerson (voice)

2003		Karen Sisco (2 episodes) as Charlie Lucre
2003		Reno 911! (1 episode) as Danny DeVito
2003		Jimmy Kimmel Live! (2 episodes)

2000		Bette (1 episode) as Danny DeVito
2000		Ed (1 episode) as Dr. Jack Carmichael

1998

(1 episode) as Self

1997

(2 episodes) as Self

1996		Pearl (1 episode) as Dean Martin
1996		E! True Hollywood Story (1 episode)
1996		The Daily Show (1 episode) as Self
1996		The Rosie O'Donnell Show (1 episode) as Self

1995

(1 episode) as Self

1994

(1 episode) as Roy

1992

(1 episode) as Danny DeVito

1989

(3 episodes) as Herbert Powell (voice)

1985

(1 episode) as Herbert

1979		The Associates (1 episode) as Alan Swathmore (uncredited)
1979		Angie (1 episode) as Uncle Cheech

1978

(114 episodes) as Louie De Palma

1976

(1 episode) as Anthony 'Beanzie' Marott

1975		Saturday Night Live (1 episode) as Self - Cameo (uncredited) (6 episodes) as Self - Host (1 episode) as Self
1975		Starsky & Hutch (1 episode) as John John the Apple / John DeAppoliso

1974

(1 episode)

1969

(1 episode) as Danny DeVito

1966

(1 episode) as Self - Laudatio (2 episodes) as Self

1953

(3 episodes) as Self - Presenter

1952

(1 episode) as Self

Production

2022

(10 episodes) … Executive Producer

2003		Karen Sisco (10 episodes) … Executive Producer
2003		Reno 911! (88 episodes) … Producer

2002		The Funkhousers (1 episode) … Producer
2002		The American Embassy (6 episodes) … Producer

2001

(7 episodes) … Producer

Directing

1985		Mary (2 episodes) … Director
1985		Amazing Stories (1 episode) … Director

1978

(3 episodes) … Director