 | Marty, Life Is Short (2026) as Self (archive footage) |
 | You Had to Be There: How the Toronto Godspell Ignited the Comedy Revolution... (2025) as Self (archive footage) |
 | John Candy: I Like Me (2025) as Self - Head Writer & Actor, SCTV (archive footage) |
 | Ghostbusters: Afterlife (2021) as Dr. Egon Spengler (archive footage) (uncredited) |
 | Belushi (2020) as Self (archive footage) |
 | Cleanin' Up the Town: Remembering Ghostbusters (2020) as Self |
 | Thank You, Del: The Story of the Del Close Marathon (2015) as Self |
 | Drunk Stoned Brilliant Dead (2015) as Self - Actor / Director (archive footage) |
 | Inside Story: National Lampoon's Vacation (2011) as Self |
 | Caddyshack: The Inside Story (2009) as Himself |
 | Year One (2009) as Adam |
 | Animal House: The Inside Story (2008) as Self |
 | Walk Hard: The Dewey Cox Story (2007) as L'Chaim |
 | Students of 'The Graduate' (2007) as Himself |
 | Knocked Up (2007) as Ben's Dad |
 | Students of 'The Graduate' (2007) as Self |
 | The Last Kiss (2006) as Professor Bowler |
 | Chicago Filmmakers on the Chicago River (2004) as Self |
 | I'm with Lucy (2002) as Jack |
 | Groundhog Day: The Weight of Time (2002) as Self |
 | Orange County (2002) as Don Durkett |
 | Ghostbusters 1999 (1999) as Self |
 | Caddyshack: The 19th Hole (1999) as Self - Director |
 | The Yearbook: An Animal House Reunion (1998) as Self - Writer |
 | As Good as It Gets (1997) as Dr. Bettes |
 | Love Affair (1994) as Sheldon Blumenthal |
 | Airheads (1994) as Chris Moore |
 | Groundhog Day (1993) as Le neurologue |
 | The Earth Day Special (1990) as Elon Spengler |
 | Ghostbusters II (1989) as Dr. Egon Spengler |
 | The Best of SCTV (1988) |
 | Stealing Home (1988) as Alan Appleby |
 | Baby Boom (1987) as Steven Buchner |
 | Richard Lewis: I'm In Pain (1985) as Self |
 | On the Scene with the Ghostbusters (1984) |
 | Ghostbusters (1984) as Egon Spengler |
 | The Rodney Dangerfield Special: I Can't Take It No More (1983) as Self / Various |
 | National Lampoon's Vacation (1983) as Car salesman (voice) (uncredited) |
 | Spacehunter: Adventures in the Forbidden Zone (1983) as Voice (Uncredited) |
 | Heavy Metal (1981) as Zeke (voice) |
 | Stripes (1981) as Russell Ziskey |
