Filmography
| Year | Title | Role |
| 2021 | The Shuroo Process | Dr. Feinstein |
| 2018 | Wildling | Daddy |
| 2018 | BALLAD OF A RIGHTEOUS MERCHANT | Self |
| 2013 | Malignant (2013) | The Man |
| 2013 | The Control Group | Dr. Broward |
| 2013 | End of the World | Dr. Walter Brown |
| 2011 | Priest | Salesman |
| 2011 | Fading of the Cries | Mathias |
| 2011 | Catch .44 | Sheriff Connors |
| 2011 | Few Options (BIFF) | Chris Pendler |
| 2010 | Chain Letter | Mr. Smirker |
| 2010 | Junkyard Dog | Sheriff Holk |
| 2009 | Tattoos: A Scarred History | Actor |
| 2009 | My Son, My Son, What Have Ye Done | Uncle Ted |
| 2009 | Double Feature: Halloween / Halloween II | Sheriff Brackett |
| 2008 | Humboldt County | Jack |
| 2008 | Touching Home | Clyde Winston |
| 2007 | Halloween (2007) | Sheriff Brackett |
| 2006 | PAFF: The List | Johan Gabini |
| 2005 | The Wild Blue Yonder | The Alien |
| 2004 | Seed of Chucky | Chucky |
| 2004 | Drop Dead Sexy | Herman |
| 2003 | The Lord of the Rings: The Return of the King (2003) | Grima Wormtongue |
| 2003 | Vlad | Alexa Meyer |
| 2002 | The Lord of the Rings: The Two Towers (2002) | Grima Wormtongue |
| 2001 | Rude | Lt. Garland |
| 2000 | Shadow Hours | Roland Montague |
| 1999 | The Storytellers | The Professor |
| 1998 | Bride of Chucky | Chucky |
| 1998 | Nightwatch (1998) | Duty Doctor |
| 1998 | Senseless | Dr. Wheedon |
| 1997 | Alien 4: Resurrection | Dr. Gediman |
| 1996 | MONDO SWORN TO JUSTICE | Teddy |
| 1993 | Amos & Andrew | Officer Donnie Donaldson |
| 1991 | London Kills Me | Hemingway |
| 1991 | Scream of Stone | Fingerless |
| 1991 | Child's Play 3 | Chucky |
| 1990 | Spontaneous Combustion | Sam |
| 1990 | Sonny Boy | Weasel |
| 1990 | The Exorcist III | The Gemini Killer |
| 1990 | Child's Play 2 | Chucky |
| 1990 | Video Vortex: Grim Prairie Tales | Farley |
| 1988 | Child's Play (1988) | Charles Lee Ray/Chucky |
| 1988 | Mississippi Burning | Deputy Clinton Pell |
| 1984 | Dune (1984) | Piter DeVries |
| 1981 | Ragtime | Younger Brother |
| 1980 | Heaven's Gate | Mr. Eggleston |
| 1979 | Wise Blood | Hazel Motes |
| 1978 | Eyes of Laura Mars | Tommy Ludlow |
| 1977 | A Group Portrait with a Woman | Boris Koltowski |
| 1975 | One Flew Over the Cuckoo's Nest | Billy Bibbit |
