Acting

—		The Associates 1 episode as Alan Swathmore (uncredited)
—		Pearl 0 episodes as Dean Martin

2025

1 episode as Frank

2024

1 episode as Self

2023		The Kelly Clarkson Show 1 episode
2023		Honest Trailers 1 episode as Bruce Davis (archive footage)
2023		Arnold 2 episodes as Self
2023		History of the World: Part II 1 episode as Czar Nicholas
2023		The Late Late Show with James Corden 1 episode as Self - Guest

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

2021

1 episode as Chemist

2020		Made in Hollywood 1 episode as Self
2020		Stars in the House 1 episode as Self

2018

2 episodes as Dr. Wexler

2017

2 episodes as Self

2015		Deadbeat 1 episode as Giuseppe Monamocce
2015		The Tonight Show Starring Jimmy Fallon 2 episodes as Self

2012

2 episodes as Self

2011		Saturday Night Live 1 episode as Self - Cameo (uncredited)
2011		Goldene Kamera Verleihung 1 episode as Self - Laudatio

2010

2 episodes as Self

2009

2 episodes as Self

2007

1 episode as Self

2006		The View 2 episodes as Self
2006		Today 1 episode as Self
2006		MADtv 1 episode as Self
2006		The Daily Show 1 episode as Self
2006		It's Always Sunny in Philadelphia 165 episodes as Frank Reynolds

2004		Father of the Pride 1 episode as Emerson (voice)
2004		Reno 911! 1 episode as Danny DeVito
2004		Friends 1 episode as Roy

2003		Karen Sisco 2 episodes as Charlie Lucre
2003		E! True Hollywood Story 1 episode

2002

1 episode as Dr. Jack Carmichael

2000

1 episode as Danny DeVito

1998

1 episode as Self

1996

1 episode as Self

1995

3 episodes as Self

1994

1 episode as Danny DeVito

1991

4 episodes as Herbert Powell (voice)

1986

1 episode as Herbert

1982

6 episodes as Self - Host

1979

1 episode as Uncle Cheech

1978

114 episodes as Louie De Palma

1977		Police Woman 1 episode
1977		Starsky & Hutch 1 episode as John John the Apple / John DeAppoliso
1977		Delvecchio 1 episode as Anthony 'Beanzie' Marott

Production

2024

5 episodes … Executive Producer

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

1986

1 episode … Director

1985

2 episodes … Director

1982

3 episodes … Director