| Self Reliance (2023)
As Dennis Walcott | (Not seen) |
| Queen Bees (2021)
As Arthur Lane | (Not seen) |
| The Tender Bar (2021)
As Grandpa | (Not seen) |
| Nobody (2021)
As David Mansell | (Not seen) |
| Back in Time (2015)
As Self | (Not seen) |
| Zodiac: Signs of the Apocalypse (2014) (AKA "Apocalypse Tomorrow")
As Harry Setag | (Not seen) |
| Blood Lake: Attack of the Killer Lampreys (2014) (AKA "Blood Lake")
As Mayor Akerman | (Not seen) |
| Sin City: A Dame to Kill For (2014) (AKA "Sin City 2")
As Kroenig | (Not seen) |
| A Million Ways to Die in the West (2014)
As Doc Brown (uncredited) | (Not seen) |
| The Oogieloves in the Big Balloon Adventure (2012) (AKA "The Oogieloves in "The BIG Balloon Adventure"")
As Lero Sombrero | (Not seen) |
| Dead Before Dawn 3D (2012) (AKA "Dead Before Dawn")
As Horus Galloway | (Not seen) |
| Foodfight! (2012)
As Mr. Clipboard | (Not seen) |
| Cadaver (2012)
As Cadaver | (Not seen) |
| Piranha 3DD (2012) (AKA "Piranha Returns")
As Mr. Goodman | (Not seen) |
| InSight (2011) (AKA "Who Killed Allison Parks?")
As Shep | (Not seen) |
| Jack and the Beanstalk (2010)
As Headmaster | (Not seen) |
| Piranha 3D (2010)
As Henry Goodman | (Not seen) |
| Knights of Bloodsteel (2009) (AKA "Dragons of Black Roc") | (Not seen) |
| Fly Me to the Moon (2008) (AKA "Fly Me to the Moon 3D")
As Amos (voice) | (Not seen) |
| The Tale of Despereaux (2008)
As Hovis (voice) | (Not seen) |
| Interstate 60: Episodes of the Road (2002) (AKA "I-60")
As Ray | (Not seen) |
| Wit (2001)
As Dr. Harvey Kelekian | (Not seen) |
| Alice in Wonderland (1999)
As White Knight | (Not seen) |
| Baby Geniuses (1999)
As Heep | (Not seen) |
| Man on the Moon (1999) (AKA "Andy Kaufman")
As Christopher Lloyd - 'Taxi' Actor | (Not seen) |
| Quicksilver Highway (1997)
As Aaron Quicksilver | (Not seen) |
| Angels in the Endzone (1997)
As Al the Boss Angel | (Not seen) |
| Anastasia (1997)
As Rasputin (voice) | (Not seen) |
| The Real Blonde (1997)
As Ernst | (Not seen) |
| Rent-a-Kid (1995)
As Lawrence 'Larry' Kayvey | (Not seen) |
| Things to Do in Denver When You're Dead (1995)
As Pieces | (Not seen) |
| The Pagemaster (1994)
As Mr. Dewey | (Not seen) |
| Radioland Murders (1994)
As Zoltan | (Not seen) |
| Camp Nowhere (1994)
As Dennis Van Welker | (Not seen) |
| Angels in the Outfield (1994)
As Al the Boss Angel | (Not seen) |
| Dennis the Menace (1993) (AKA "Dennis")
As Switchblade Sam | (Not seen) |
| Addams Family Values (1993)
As Uncle Fester Addams | (Not seen) |
| Suburban Commando (1991)
As Charlie Wilcox | (Not seen) |
| The Addams Family (1991)
As Uncle Fester | (Not seen) |
| DuckTales the Movie: Treasure of the Lost Lamp (1990) (AKA "DuckTales: The Movie - Treasure of the Lost Lamp")
As Merlock | (Not seen) |
| Back to the Future Part III (1990) (AKA "Three")
As Doctor Emmett Brown | (Not seen) |
| The Dream Team (1989)
As Henry Sikorsky | (Not seen) |
| Back to the Future Part II (1989) (AKA "Paradox")
As Doctor Emmett Brown | (Not seen) |
| Track 29 (1988)
As Henry Henry | (Not seen) |
| Who Framed Roger Rabbit (1988) (AKA "Dead Toons Don't Pay Bills")
As Judge Doom | (Not seen) |
| Eight Men Out (1988)
As 'Sleepy' Bill Burns | (Not seen) |
| Clue (1985) (AKA "Clue: The Movie")
As Professor Plum | (Not seen) |
| Back to the Future (1985)
As Dr. Emmett Brown | (Not seen) |
| Star Trek III: The Search for Spock (1984) (AKA "Star Trek III: Return to Genesis")
As Cmdr. Kruge | (Not seen) |
| The Adventures of Buckaroo Banzai Across the 8th Dimension (1984) (AKA "The Adventures of Buckaroo Banzai")
As John Bigboote | (Not seen) |
| Mr. Mom (1983)
As Larry | (Not seen) |
| To Be or Not to Be (1983)
As Capt. Schultz | (Not seen) |
| The Postman Always Rings Twice (1981) (AKA "Wenn der Postmann zweimal klingelt")
As Salesman | (Not seen) |
| The Onion Field (1979)
As Jailhouse Lawyer | (Not seen) |
| The Lady in Red (1979) (AKA "Guns, Sin and Bathtub Gin")
As "Frognose" Balducci | (Not seen) |
| Goin' South (1978)
As Deputy Towfield | (Not seen) |
| One Flew Over the Cuckoo's Nest (1975)
As Max Taber | (Not seen) |