| — | Celluloid Wizards in the Video Wasteland: The Saga of Empire Pictures | Himself |
| — | Waterwick | Old Friend (voice) |
| 2024 | Watchmen: Chapter I | Edgar Jacobi / Moloch / British Newscaster (voice) |
| 2024 | Masters of the Universe: Revolution | Zodak (voice) |
| 2024 | Stream | Mr. Lockwood |
| 2024 | Lost in Time: Unearthing the Primevals | Narrator (Voice) |
| 2023 | Batman: The Doom That Came to Gotham | Kirk Langstrom (voice) |
| 2023 | Onyx the Fortuitous and the Talisman of Souls | Bartok the Great |
| 2023 | Butch Cassidy and the Wild Bunch | Charles Siringo |
| 2023 | Butch vs. Sundance | Charles Siringo |
| 2023 | Re-Resonator: Looking Back at From Beyond | |
| 2022 | The Shuttlepod Show | Self |
| 2022 | Enough Sleep | Henry (voice) |
| 2021 | DOTA: Dragon's Blood | Father (voice) |
| 2021 | Age of Stone and Sky: The Sorcerer Beast | Far Seeing Crow |
| 2020 | Star Trek: Lower Decks | Agimus (voice) |
| 2020 | Star Trek: Lower Decks | AGIMUS (voice) |
| 2020 | In Search of Darkness: Part II | Self |
| 2020 | Unbelievable!!!!! | Male Larrisha |
| 2019 | Creepshow | Obersturmfuhrer Reinhard Schmelzgerat |
| 2019 | Pandora | Berman Livingston |
| 2019 | In Search of Darkness | Self |
| 2019 | The Last Drive-in with Joe Bob Briggs | Himself |
| 2019 | Holiday Hell | The Shopkeeper |
| 2019 | Tigtone | Prince Lavender |
| 2018 | Scooby-Doo! & Batman: The Brave and the Bold | The Question (voice) |
| 2018 | What We Left Behind: Looking Back at Star Trek: Deep Space Nine | Self |
| 2018 | Howard Lovecraft and the Kingdom of Madness | H.P. Lovecraft (voice) |
| 2017 | Howard Lovecraft & the Undersea Kingdom | King Abdul (voice) |
| 2016 | Videozone: The Making of "Trancers II" | Self |
| 2014 | Gotham | Office Manager |
| 2014 | Suburban Gothic | Dr. Carpenter |
| 2014 | Beethoven und der Piratenschatz | Fritz Bruchschnauser / Howard Belch |
| 2013 | Tödliches Spiel - Would You Rather? | Shepard Lambrick |
| 2013 | Transformers - Beast Hunters - Predacons Rising | Ratchet (voice) |
| 2013 | The Penny Dreadful Picture Show | Brady |
| 2013 | Favor | Tad Harrison |
| 2013 | Motivational Growth | The Mold |
| 2013 | Star Trek: Enterprise - In Conversation: The First Crew | |
| 2013 | Star Trek: Enterprise - Uncharted Territory | Self |
| 2013 | Evil Asylum | Herbert West (Archive Footage) |
| 2012 | Teenage Mutant Ninja Turtles | Dr. Falco (voice) |
| 2012 | Teenage Mutant Ninja Turtles | Dr. Falco / Rat King (voice) |
| 2012 | Night of the Living Dead: Re-Animation | Harold Tovar |
| 2012 | Die Hexen von Oz | Frank Baum |
| 2012 | Ein Elf zu Weihnachten | Mickey |
| 2011 | ThunderCats | Soul Sever (voice) |
| 2011 | Die Hexen von Oz | Frank |
| 2011 | Femme Fatales | Voice of the Interrogator |
| 2010 | Mission Scooby-Doo | H.P. Hatecraft (voice) |
| 2010 | Die Avengers - Die mächtigsten Helden der Welt | Samuel Sterns / The Leader (voice) |
| 2010 | Transformers Prime: Beast Hunters | Ratchet (voice) |
| 2010 | The United Monster Talent Agency | Wolfman Cameraman |
| 2010 | American Bandits: Frank and Jesse James | Ed Bass |
| 2010 | Gegen die Zeit | Sumner |
| 2009 | Dark House | Walston Rey |
| 2009 | The Dunwich Horror | Wilbur Whateley |
| 2008 | Batman: The Brave and the Bold | Kite Man (voice) |
| 2008 | Parasomnia | Detective Garrett |
| 2007 | Haunted Hill - Die Rückkehr in das Haus des Schreckens | Dr. Vannacutt |
| 2007 | Stuck | 911 Operator (voice) |
| 2007 | The Wizard of Gore | The Geek |
| 2007 | Re-Animator Resurrectus | Himself |
| 2007 | The Black Cat | Edgar Allan Poe |
| 2007 | Brutal - Ein erbarmungsloser Slasher! | Sheriff Jimmy |
| 2007 | The Attackmen | Mr. Simms |
| 2006 | Abominable | Buddy the Clerk |
| 2006 | Blackwater Valley Exorcism | The Sheriff |
| 2006 | Satanic | Detective Joyner |
| 2006 | Voodoo Moon | Frank Taggert |
| 2006 | Working with a Master: Stuart Gordon | Himself |
| 2005 | Criminal Minds | John Nichols |
| 2005 | Masters of Horror | |
| 2005 | Edmond | Desk Clerk |
| 2005 | Sharkman - Schwimm um dein Leben | Dr. Preston King |
| 2005 | All Souls Day: Dia de los Muertos | Sarah White |
| 2005 | Monsters Gone Wild | |
| 2004 | Die Liga der Gerechten | The Question (voice) |
| 2004 | 4400 - Die Rückkehrer | Kevin Burkhardt |
| 2004 | Tomb of Terror | Dr. Haggis |
| 2004 | Star Trek's Favorite Moments | Himself |
| 2003 | Cold Case - Kein Opfer ist je vergessen | Sly Borden |
| 2003 | Spider-Man: The New Animated Series | Professor (voice) |
| 2003 | Spider-Man: The New Animated Series | Dr. Zellner (voice) |
| 2003 | Beyond Re-Animator | Dr. Herbert West |
| 2002 | FearDotCom | Styles |
| 2002 | The Twilight Zone | Harry Radditch |
| 2002 | She Spies | Indigo |
| 2002 | Ebola – Anschlag auf den Präsidenten | Brown |
| 2001 | Star Trek: Enterprise | Commander Shran |
| 2001 | Star Trek: Enterprise | Krem |
| 2001 | Star Trek: Enterprise | Self |
| 2001 | Horror in the Attic | Dr. Ek |
| 2000 | CSI - Den Tätern auf der Spur | Dale Sterling |
| 2000 | Faust: Love of the Damned | Lt. Dan Margolies |
| 2000 | FreakyLinks | |
| 1999 | Haunted Hill | Dr. Vannacutt |
| 1998 | Ich weiß noch immer, was du letzten Sommer getan hast | Mr. Brooks |
| 1998 | Martial Law - Der Karate-Cop | |
| 1998 | Das Netz | |
| 1998 | Caught Up | Security Guard |
| 1998 | Spoiler - Verdammt im Eis | Captain |
| 1998 | The Making of 'The Frighteners' | Himself |
| 1997 | The New Batman Adventures | Scarecrow (voice) |
| 1997 | Perversions of Science | 50557 |
| 1997 | Time Tracers | Dr. Carrington |
| 1997 | Snide and Prejudice | Therapist Meissner |
| 1996 | The Frighteners | Milton Dammers |
| 1996 | Castle Freak | John Reilly |
| 1996 | Marilyn - Ihr Leben | Montgomery Clift |
| 1996 | Cyberstalker | Andy Coberman |
| 1995 | Star Trek: Raumschiff Voyager | Penk |
| 1995 | Dillinger and Capone | Gilroy |
| 1995 | Ein Single kommt immer allein | Klein |
| 1995 | Videozone: The Making of "Castle Freak" | Self |
| 1994 | Babylon 5 | Harriman Gray |
| 1994 | Love and a .45 | Dinosaur Bob |
| 1994 | Shocking Fear | Dr. Haggis |
| 1994 | Felony - Die CIA-Verschwörung | Bill Knight |
| 1994 | Aliens: Ride at the Speed of Fright | Hyer |
| 1993 | Star Trek: Deep Space Nine | Brunt |
| 1993 | Star Trek: Deep Space Nine | Weyoun |
| 1993 | Star Trek: Deep Space Nine | Tiron |
| 1993 | Star Trek: Deep Space Nine | Weyoun / Officer Mulkahey |
| 1993 | Star Trek: Deep Space Nine | Weyoun / Brunt |
| 1993 | H.P. Lovecraft's Necronomicon | H.P. Lovecraft |
| 1993 | ウルトラマンパワード | |
| 1992 | Fortress - Die Festung | D-Day, the Computer Geek |
| 1992 | Rexosaurus | Dr. Mordrid |
| 1991 | Mutronics - Invasion der Supermutanten | Dr. East |
| 1991 | Trancers II | Dr. Pyle |
| 1991 | Meister des Grauens | Francisco |
| 1991 | Ein Strauß Töchter | |
| 1991 | Death Falls | Lonnie Hawks |
| 1991 | Bride of Re-Animator Documentary | self |
| 1990 | Der rote Blitz | Jimmy Swain |
| 1990 | Bride of Re-Animator | Dr. Herbert West |
| 1990 | Gorgon Video Magazine Vol. 2 | Self |
| 1989 | Robotjox - Die Schlacht der Stahlgiganten | 1st Prole |
| 1989 | Alles Okay, Corky? | |
| 1988 | Freddy's Nightmares | Ralph |
| 1988 | Underground Werewolf | Colin Childress |
| 1988 | Pulse Pounders | Jonathan (Evil Clergyman sequence) |
| 1988 | Tote leben länger | Chaz |
| 1988 | The Evil Clergyman | Jonathan |
| 1988 | The Incredibly Strange Film Show | Self |
| 1987 | Die Schöne und das Biest | |
| 1987 | Jake & McCabe | |
| 1987 | Cyclone | Rick Davenport |
| 1987 | The Phantom Empire | Andrew Paris |
| 1987 | Houston Knights | |
| 1986 | From Beyond - Aliens des Grauens | Crawford Tillinghast |
| 1985 | Re-Animator | Herbert West |
| 1984 | Hunter | James Wilkens |
| 1983 | Der Mann mit den zwei Gehirnen | Dr. Jones |
| 1983 | The Skin of Our Teeth | Henry Antrobus |
| 1982 | American Playhouse | |
| 1981 | Ist das nicht mein Leben? | 1st Year Intern |
| 1981 | Frightmare - Alptraum | Stu |
