 | Ghostbusters: Afterlife (2021)
Dr. Egon Spengler (archive footage) (uncredited) |
 | Belushi (2020)
Self (archive footage) |
 | Cleanin' Up the Town: Remembering Ghostbusters (2020)
Self |
 | Thank You, Del: The Story of the Del Close Marathon (2015)
Self |
 | Drunk Stoned Brilliant Dead (2015)
Self - Actor / Director (archive footage) |
 | Inside Story: National Lampoon's Vacation (2011)
Self |
 | Caddyshack: The Inside Story (2009)
Himself |
 | Year One (2009)
Adam |
 | Animal House: The Inside Story (2008)
Self |
 | Walk Hard: The Dewey Cox Story (2007)
L'Chaim |
 | Students of 'The Graduate' (2007)
Self |
 | Knocked Up (2007)
Ben's Dad |
 | The Last Kiss (2006)
Professor Bowler |
 | Chicago Filmmakers on the Chicago River (2004)
Self |
 | I'm with Lucy (2002)
Jack |
 | Groundhog Day: The Weight of Time (2002)
Self |
 | Orange County (2002)
Don Durkett |
 | Ghostbusters 1999 (1999)
Self |
 | Caddyshack: The 19th Hole (1999)
Self - Director |
 | The Yearbook: An Animal House Reunion (1998)
Self - Writer |
 | As Good as It Gets (1997)
Dr. Bettes |
 | Love Affair (1994)
Sheldon Blumenthal |
 | Airheads (1994)
Chris Moore |
 | Groundhog Day (1993)
Neurologist |
 | The Earth Day Special (1990)
Elon Spengler |
 | Ghostbusters II (1989)
Dr. Egon Spengler |
 | The Best of SCTV (1988)
|
 | Stealing Home (1988)
Alan Appleby |
 | Baby Boom (1987)
Steven Buchner |
 | Richard Lewis: I'm In Pain (1985)
Self |
 | Ghostbusters (1984)
Egon Spengler |
 | The Rodney Dangerfield Special: I Can't Take It No More (1983)
Self / Various |
 | National Lampoon's Vacation (1983)
Car salesman (voice) (uncredited) |
 | Spacehunter: Adventures in the Forbidden Zone (1983)
Voice (Uncredited) |
 | Heavy Metal (1981)
Zeke (voice) |
 | Stripes (1981)
Russell Ziskey |
 | Godspell 2025
(archive footage) |