Filmography109 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2026 | Till Death Do Us Part: Making of Bride of Re-AnimatorMovie | Himself | 72 |
| 2025 | Butch Cassidy and the Wild BunchMovie | Charles Siringo | 71 |
| 2025 | The Devil Inside HerMovie | Francisco (archive footage) | 71 |
| 2024 | StreamMovie | Mr. Lockwood / Pitboss | 70 |
| 2024 | Watchmen: Chapter IMovie | Edgar Jacobi / Moloch / British Newscaster / Photographer #1 (voice) | 70 |
| 2024 | Lost to Time: Unearthing the PrimevalsMovie | Narrator (Voice) | 70 |
| 2023 | Onyx the Fortuitous and the Talisman of SoulsMovie | Bartok the Great | 69 |
| 2022 | The Shuttlepod ShowSeries | Self | 68 |
| 2020 | In Search of Darkness: Part IIMovie | Self | 66 |
| 2019 | CreepshowSeries | Obersturmfuhrer Reinhard Schmelzgerat | 65 |
| 2019 | The Last Drive-in with Joe Bob BriggsSeries | Himself | 65 |
| 2019 | PandoraSeries | Berman Livingston | 65 |
| 2018 | What We Left Behind: Looking Back at Star Trek: Deep Space NineMovie | Self | 64 |
| 2018 | Howard Lovecraft & The Kingdom Of MadnessMovie | H.P. Lovecraft (voice) | 64 |
| 2017 | Howard Lovecraft & the Undersea KingdomMovie | King Abdul (voice) | 63 |
| 2014 | GothamSeries | Office Manager | 60 |
| 2014 | Suburban GothicMovie | Dr. Carpenter | 60 |
| 2014 | Beethoven's Treasure TailMovie | Fritz Bruchschnauser / Howard Belch | 60 |
| 2013 | The Penny Dreadful Picture ShowMovie | Brady | 59 |
| 2013 | Would You RatherMovie | Shepard Lambrick | 59 |
| 2013 | Transformers Prime: Beast Hunters - Predacons RisingMovie | Ratchet (voice) | 59 |
| 2013 | Star Trek: Enterprise - Uncharted TerritoryMovie | Self | 59 |
| 2013 | FavorMovie | Tad Harrison | 59 |
| 2012 | Teenage Mutant Ninja TurtlesSeries | Dr. Falco / Rat King (voice) | 58 |
| 2012 | Dorothy and the Witches of OzMovie | Frank Baum | 58 |
| 2011 | Femme FatalesSeries | Voice of the Interrogator | 57 |
| 2011 | ThunderCatsSeries | Soul Sever (voice) | 57 |
| 2010 | Scooby-Doo! Mystery IncorporatedSeries | H.P. Hatecraft (voice) | 56 |
| 2010 | The Avengers: Earth's Mightiest HeroesSeries | Leader (voice) | 56 |
| 2010 | Transformers: PrimeSeries | Ratchet (voice) | 56 |
| 2010 | The United Monster Talent AgencyMovie | Wolfman Cameraman | 56 |
| 2010 | UrgencyMovie | Sumner | 56 |
| 2009 | The Dunwich HorrorMovie | Wilbur Whateley | 55 |
| 2008 | Batman: The Brave and the BoldSeries | Kite Man (voice) | 54 |
| 2007 | StuckMovie | 911 Operator (voice) | 53 |
| 2007 | Re-Animator ResurrectusMovie | Himself | 53 |
| 2007 | The Wizard of GoreMovie | The Geek | 53 |
| 2006 | EdmondMovie | Desk Clerk | 52 |
| 2006 | AbominableMovie | Buddy the Clerk | 52 |
| 2006 | Voodoo MoonMovie | Frank Taggert | 52 |
| 2006 | Working with a Master: Stuart GordonMovie | Himself | 52 |
| 2006 | Blackwater Valley ExorcismMovie | The Sheriff | 52 |
| 2005 | Criminal MindsSeries | John Nichols | 51 |
| 2005 | Masters of HorrorSeries | — | 51 |
| 2005 | All Souls Day: Dia de los MuertosMovie | Sarah White | 51 |
| 2005 | Monsters Gone WildMovie | — | 51 |
| 2004 | The 4400Series | Kevin Burkhardt | 50 |
| 2004 | Justice League UnlimitedSeries | The Question (voice) | 50 |
| 2004 | Star Trek's Favorite MomentsMovie | Self | 50 |
| 2004 | Tomb of TerrorMovie | Dr. Haggis | 50 |
| 2003 | Cold CaseSeries | Sly Borden | 49 |
| 2003 | Spider-Man: The New Animated SeriesSeries | Dr. Zellner (voice) | 49 |
| 2002 | The Twilight ZoneSeries | Harry Radditch | 48 |
| 2002 | She SpiesSeries | Indigo | 48 |
| 2002 | FearDotComMovie | Styles | 48 |
| 2002 | ContagionMovie | Brown | 48 |
| 2001 | Star Trek: EnterpriseSeries | Commander Shran | 47 |
| 2000 | CSI: Crime Scene InvestigationSeries | Dale Sterling | 46 |
| 2000 | FreakyLinksSeries | — | 46 |
| 1999 | SpongeBob SquarePantsSeries | Wally (voice) | 45 |
| 1999 | House on Haunted HillMovie | Dr. Vannacutt | 45 |
| 1998 | Martial LawSeries | Antoine Trembel | 44 |
| 1998 | The Making of 'The Frighteners'Movie | Self | 44 |
| 1998 | The NetSeries | — | 44 |
| 1998 | Caught UpMovie | Security Guard | 44 |
| 1997 | The New Batman AdventuresSeries | Scarecrow (voice) | 43 |
| 1997 | Perversions of ScienceSeries | 50557 | 43 |
| 1997 | Snide and PrejudiceMovie | Therapist Meissner | 43 |
| 1996 | Norma Jean & MarilynMovie | Montgomery Clift | 42 |
| 1996 | FelonyMovie | Bill Knight | 42 |
| 1996 | The FrightenersMovie | Milton Dammers | 42 |
| 1996 | Castle FreakMovie | John Reilly | 42 |
| 1996 | CyberstalkerMovie | Andy Coberman | 42 |
| 1995 | The Single GuySeries | Klein | 41 |
| 1995 | Star Trek: VoyagerSeries | Penk | 41 |
| 1995 | Videozone: The Making of "Castle Freak"Movie | Self | 41 |
| 1994 | Babylon 5Series | Harriman Gray | 40 |
| 1994 | Lurking FearMovie | Dr. Haggis | 40 |
| 1994 | Love and a .45Movie | Dinosaur Bob | 40 |
| 1993 | Star Trek: Deep Space NineSeries | Weyoun | 39 |
| 1993 | Ultraman: The Ultimate HeroSeries | — | 39 |
| 1993 | NecronomiconMovie | H.P. Lovecraft | 39 |
| 1992 | FortressMovie | D-Day | 38 |
| 1992 | Doctor MordridMovie | Dr. Mordrid | 38 |
| 1991 | SistersSeries | — | 37 |
| 1991 | Trancers IIMovie | Dr. Pyle | 37 |
| 1991 | The GuyverMovie | Dr. East | 37 |
| 1991 | The Pit and the PendulumMovie | Francisco | 37 |
| 1991 | Death FallsMovie | Lonnie Hawks | 37 |
| 1990 | The FlashSeries | Jimmy Swain | 36 |
| 1990 | Robot JoxMovie | 1st Prole | 36 |
| 1989 | Life Goes OnSeries | — | 35 |
| 1988 | Freddy's NightmaresSeries | Ralph | 34 |
| 1988 | Dead Man WalkingMovie | Chaz | 34 |
| 1988 | Cellar DwellerMovie | Colin Childress | 34 |
| 1988 | Pulse PoundersMovie | Jonathan (Evil Clergyman sequence) | 34 |
| 1988 | The Incredibly Strange Film ShowSeries | Self | 34 |
| 1988 | The Evil ClergymanMovie | Jonathan | 34 |
| 1987 | Jake and the FatmanSeries | — | 33 |
| 1987 | Beauty and the BeastSeries | Python | 33 |
| 1987 | CycloneMovie | Rick Davenport | 33 |
| 1987 | The Phantom EmpireMovie | Andrew Paris | 33 |
| 1985 | Re-AnimatorMovie | Herbert West | 31 |
| 1984 | HunterSeries | James Wilkens | 30 |
| 1983 | The Man with Two BrainsMovie | Dr. Jones | 29 |
| 1983 | FrightmareMovie | Stu | 29 |
| 1982 | American PlayhouseSeries | — | 28 |
| 1981 | Honky Tonk FreewayMovie | Drive In Teller | 27 |
| 1981 | Whose Life Is It Anyway?Movie | 1st Year Intern | 27 |