Filmography
| Year | Title | Role |
| 2015 | Absolutely Anything | Extraterrestrial |
| 2014 | The Boxtrolls | Original Song |
| 2010 | Not the Messiah (He's a Very Naughty Boy) | Writer |
| 2009 | Monty Python: Almost the Truth - The Lawyers Cut | Actor |
| 2008 | Delgo | Spig |
| 2007 | Shrek the Third | Merlin |
| 2004 | Ella Enchanted | Narrator |
| 2003 | Hollywood Homicide | Celebrity |
| 2000 | 102 Dalmatians | Waddlesworth |
| 1999 | Dudley Do-right | Prospector Kim Jay Darling |
| 1999 | South Park: Bigger Longer & Uncut Movie Party | Dr. Vosknocker |
| 1998 | Quest for Camelot | Devon |
| 1998 | Rudolph the Red-Nosed Reindeer: The Movie | Slyly the Fox |
| 1996 | The Wind in the Willows | Szczur |
| 1995 | Casper (1995) | Paul 'Dibbs' Plutzker |
| 1992 | Mom and Dad Save the World | King Raff |
| 1990 | Clue / Nuns On The Run | Brian Hope/Flight Attendant 1 |
| 1989 | The Adventures of Baron Munchausen | Desmond/Berthold |
| 1986 | The Transformers: The Movie | Wreck-Gar |
| 1985 | National Lampoon's European Vacation | The Bike Rider |
| 1983 | Monty Python's The Meaning of Life | Fish #3 / Singer / Mr. Moore / Mrs. Blackitt / Watson / Atkison / Perkins / Victim #3 / Front End / Mrs. Hendy / Man in pink / Noel Coward / Gaston / Angela |
| 1983 | Yellowbeard | Commander Clement |
| 1982 | Monty Python Live at the Hollywood Bowl | Actor, Writer |
| 1979 | Life of Brian | Wiseguy/Stan (Loretta)/Harry the Haggler/Culprit Woman/Warris/Intensely Dull Youth/Jailer's Assistant/ Otto/ Lead Singer Crucifee |
| 1978 | The Rutles | Dirk McQuickly/The Narrator/Stanley J. Krammerhead III, Jr. |
| 1978 | All You Need Is Cash | Dirk McQuickly/The Narrator/Stanley J. Krammerhead III, Jr. |
| 1975 | Monty Python and the Holy Grail 50th Anniversary | Dead Collector/Mr Blint/Sir Robin/The Guard Who Doesn't Hiccough but Tries to Get Things Straight/Concorde/Roger the Shrubber/Brother Maynard |
| 1972 | And Now for Something Completely Different | Prosecutor/Marriage Counselor |
