Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Actor | La Nuit au musée 2 | 2009 | Ivan the Terrible |
| Actor | Saturday Night Live | Christopher Guest | |
| Actor | Princess Bride | 1987 | Count Tyrone Rugen |
| Actor | Des hommes d'honneur | 1992 | Dr. Stone |
| Actor | The Invention of Lying | 2009 | Nathan Goldfrappe |
| Actor | La petite boutique des horreurs | 1986 | The First Customer |
| Actor | Small Soldiers | 1998 | Slamfist / Scratch-It |
| Actor | Spinal Tap | 1984 | |
| Writer | Spinal Tap | 1984 | |
| Actor | Bêtes de scène | 2000 | Harlan Pepper |
| Director | Bêtes de scène | 2000 | |
| Writer | Bêtes de scène | 2000 | |
| Actor | Un Justicier dans la ville | 1974 | Patrolman Reilly |
| Actor | SpongeBob SquarePants: Who Bob What Pants? | 2008 | Stanley S. SquarePants |
| Actor | Waiting for Guffman | 1996 | Corky St. Clair |
| Director | Waiting for Guffman | 1996 | |
| Writer | Waiting for Guffman | 1996 | |
| Actor | Mascots | 2016 | Corky St. Clair |
| Writer | Mascots | 2016 | |
| Director | Mascots | 2016 | |
| Actor | A Mighty Wind | 2003 | Alan Barrows |
| Director | A Mighty Wind | 2003 | |
| Writer | A Mighty Wind | 2003 | |
| Director | Almost Heroes | 1998 | |
| Actor | For Your Consideration | 2006 | Jay Berman |
| Director | For Your Consideration | 2006 | |
| Writer | For Your Consideration | 2006 | |
| Actor | Le Gang des frères James | 1980 | Charlie Ford |
| Actor | Girlfriends | 1978 | Eric |
| Actor | Madame Henderson Présente | 2005 | Lord Cromer |
| Director | Un Scenario en or | 1989 | |
| Writer | Un Scenario en or | 1989 | |
| Writer | Un Scenario en or | 1989 | |
| Actor | Les Quatre malfrats | 1972 | Policeman |
| Director | L'attaque de la femme de 50 pieds | 1993 | |
| Actor | Drunk Stoned Brilliant Dead: The Story of the National Lampoon | 2015 | Himself / Actor |
| Actor | Le chaînon manquant | 1980 | No Lobes |
| Actor | La Bonne Fortune | 1975 | Boy Lover |
| Actor | Misery Loves Comedy | 2015 | Himself |
| Actor | Mr. Warmth: The Don Rickles Project | 2007 | Himself |
| Actor | Spinal Tap: The Final Tour | 1994 | Nigel Tufnel |
| Writer | Spinal Tap: The Final Tour | 1994 |