2021

as Dr. Egon Spengler (archive footage) (uncredited)

2020		Belushi as Self (archive footage)
2020		Cleanin' Up the Town: Remembering Ghostbusters as Self

2019

(1 episode) as Dr. Egon Spengler (archive footage)

2015		Thank You, Del: The Story of the Del Close Marathon as Self
2015		Drunk Stoned Brilliant Dead: The Story of the National Lampoon as Self / Film Director (archive footage)

2011

as Self

2009		Caddyshack: The Inside Story as Himself
2009		Year One as Adam
2009		Late Night with Jimmy Fallon (1 episode) as Self

2008

as Self

2007		Walk Hard: The Dewey Cox Story as L'Chai'm
2007		Students of 'The Graduate' as Self
2007		Knocked Up as Ben's Dad

2006		The Last Kiss as Professor Bowler
2006		Second City: First Family of Comedy (3 episodes) as Self

2004

as Self

2002		I'm with Lucy as Jack
2002		Groundhog Day: The Weight of Time as Self
2002		Orange County as Don Durkett

1999		Ghostbusters 1999 as Self
1999		Caddyshack: The 19th Hole as Self - Director

1998

as Self - Writer

1997

as Dr. Bettes

1996

(1 episode) as Self

1994		Love Affair as Sheldon Blumenthal
1994		Airheads as Chris Moore

1993

as Neurologist

1990

as Elon Spengler

1989

as Dr. Egon Spengler

1988		The Best of SCTV
1988		Stealing Home as Alan Appleby

1987

as Steven Buchner

1985

as Self

1984

as Egon Spengler

1983		The Rodney Dangerfield Special: I Can't Take It No More as Self / Various
1983		National Lampoon's Vacation as Car salesman (voice) (uncredited)
1983		Spacehunter: Adventures in the Forbidden Zone as Voice (Uncredited)

1976

(79 episodes)