 | Big Stan (2007) as Shorts |
 | To My Great Chagrin: The Unbelievable Story of Brother Theodore (2007) as Self |
| | Eloise Goes to School (2007) |
 | Billy & Mandy: Wrath of the Spider Queen (2007) as Lord Pain (voice) |
 | Trapped Ashes (2006) as Tour Guide (segment "Wraparound") |
 | Wedding Crashers (2005) as Father O'Neil |
 | Rocket Power: The Big Day (2004) as Merv Stimpleton (voice) |
 | Never Die Alone (2004) as Funeral Home Director (uncredited) |
 | The Commission (2003) as Police Chief Jesse Curry |
 | The Year That Trembled (2002) as Ralph Tyler |
 | Rocket Power: Race Across New Zealand (2002) as Merv Stimpleton (voice) |
 | The Luck of the Irish (2001) as Reilly O'Reilly |
 | Teddy Bears' Picnic (2001) as Clifford Sloane |
 | Mullitt (2000) as Bucky |
 | Altman on His Own Terms (2000) as Self |
 | Magnolia (1999) as Thurston Howell |
 | The Wacky Adventures of Ronald McDonald: The Visitors from Outer Space (1999) as Blue Planet (voice) |
 | The Stories Behind the Making of 'The Blues Brothers' (1998) as Self |
 | Asylum (1997) as Dr. Edward Bellichek |
 | Mother Night (1996) as Adolf Eichmann (voice) |
 | Color of a Brisk and Leaping Day (1996) as Albert Robinson |
 | Bio-Dome (1996) as William Leaky |
 | Escape to Witch Mountain (1995) as Ravetch |
 | Daisy-Head Mayzie (1995) as Cat in the Hat (voice) |
 | Cyber Bandits (1995) as Dr. Knutsen |
 | The Bears Who Saved Christmas: Christopher & Holly (1994) as Flashy (voice) |
 | Vault of Horror I (1994) as Stanhope (archive footage) |
 | Tom and Jerry: The Movie (1993) as Doctor Applecheek (voice) |
 | Tune in Tomorrow... (1990) as Big John Coot |
 | Timeless Tales: The Emperor's New Clothes (1990) as Sir Buffoon |
 | Gremlins 2: The New Batch (1990) as Employee Fired for Smoking |
 | Return to Green Acres (1990) as E. Mitchell Armstrong |
| | The Magic Balloon (1990) |
 | Night Visitor (1989) as Jake |
 | The 'Burbs (1989) as Dr. Werner Klopek |
 | Switching Channels (1988) as Ike Roscoe |
 | Innerspace (1987) as Mr. Wormwood |
 | Long Gone (1987) as Hale Buchman |
 | Slow Burn (1986) as Robert |
 | Monster in the Closet (1986) as Dr. Philip Pennyworth |
 | Wuzzles: Bulls of a Feather (1986) as Eleroo (voice) |
 | The Blinkins: The Bear and the Blizzard (1986) as Announcer |
 | The Pound Puppies (1985) as Nabbit (voice) |
 | High School U.S.A. (1984) as Vice Principal Roman Ing |
 | National Lampoon's Vacation (1983) as Hotel clerk (uncredited) |
 | Nashville Grab (1981) as Art Schmeckle |
 | Tulips (1981) as Maurice Avocado |
 | The Incredible Shrinking Woman (1981) as Dr. Eugene Nortz |
 | For the Love of It (1980) as George |
 | HealtH (1980) as Bobby Hammer |
 | The Blues Brothers (1980) as Head Nazi |
 | The Halloween That Almost Wasn't (1979) as Igor |
 | A Perfect Couple (1979) as Fred Bott |
 | Disco Beaver from Outer Space (1979) as Self |
 | Amateur Night at the Dixie Bar and Grill (1979) as Milt Cavanaugh |
 | Halloween Is Grinch Night (1977) as Max (voice) |
 | The Night They Took Miss Beautiful (1977) as Rolly Royce |
 | Escape from Bogen County (1977) as Abe Rand |
 | The Kentucky Fried Movie (1977) as Himself (segment "United Appeal for the Dead") |
 | The Last Remake of Beau Geste (1977) as General Pecheur |
 | Nashville (1975) as Haven Hamilton |
| | Violence in Blue (1975) |
 | The Mini-Munsters (1973) as Mr. Grundy |
 | The Long Goodbye (1973) as Dr. Verringer |
 | Charlotte's Web (1973) as Wilbur (voice) |
 | Every Man Needs One (1972) as Walt |
 | Evil Roy Slade (1972) as Clifford |
 | Chitty Chitty Bang Bang (1968) as Dancer (uncredited) |
 | The Outlaws Is Coming (1965) as Charlie Horse |
 | Kiss Me, Stupid (1964) as Smith |
 | The Nutty Professor (1963) as Gibson, College Student |
