| 2024 | The Partisan | Trench coat |
| 2024 | ARK: The Animated Series (serie) | Senator Lucius Casius Virilis (voice) |
| 2024 | Cellphone | — |
| 2023 | Et Tu | The Murderer |
| 2023 | Volver a empezar | Howard |
| 2022 | She Will | Hathbourne |
| 2022 | El milagro del padre Stu | Monsignor Kelly |
| 2022 | Son of a Critch (serie) | Pop |
| 2021 | Dreaming of Stars: An ASMR Feature Film | Self (voice) |
| 2021 | Pups Alone | Oliver (voice) |
| 2021 | La naranja prohibida | Narrator (voice) / Alex DeLarge |
| 2021 | A Wonderful Kingdom | Narrator |
| 2021 | Blood on the Crown | Colonel Saville |
| 2020 | TimeCrafters: The Treasure of Pirate's Cove | Captain Lynch |
| 2020 | Free Lunch Express | Narrator |
| 2020 | Truth Seekers (serie) | Richard |
| 2020 | Kubrick by Kubrick | Self (archive footage) |
| 2020 | Skin: A History of Nudity in the Movies | Self |
| 2020 | The Big Ugly | Harris |
| 2019 | El escándalo | Rupert Murdoch |
| 2019 | Scooby Doo y compañía (serie) | Malcolm McDowell (voice) |
| 2018 | Corbin Nash | Blind Prophet |
| 2018 | Sueños Olvidados | Judge Messner |
| 2018 | Abnormal Attraction | Boogeyman |
| 2017 | American Satan | Mr. Capricorn |
| 2017 | Yamasong: March of the Hollows | Lord Geer |
| 2017 | Castlevania (serie) | Varney of London (voice) |
| 2017 | Grow House | Dr. Doobie |
| 2017 | Walk of Fame | Evan Polus |
| 2017 | Death Race 2050 | Chairman |
| 2017 | Jeff y unos aliens (serie) | Zib Zog (voice) |
| 2017 | Mississippi Murder | McGowen |
| 2016 | The Search for Life in Space | Narrator |
| 2016 | 31 | Father Murder |
| 2016 | Perché sono un genio! - Lorenza Mazzetti | Himself |
| 2016 | The Mystery of Casa Matusita | Supay |
| 2015 | El amanecer de los Croods (serie) | Skermiggleflop (voice) |
| 2015 | Chicago Med (serie) | Marvin Jaffrey |
| 2015 | Kids vs Monsters | Boss Monster |
| 2015 | Somos osos (serie) | Professor Lampwick (voice) |
| 2015 | Oceanus: Act One | Triton (Ship's Computer) |
| 2015 | El marido de mi hermana | Gordon |
| 2015 | Cowboys & Engines | Dr. Clay |
| 2015 | Bereave | Garvey |
| 2015 | Scooby-Doo! Y el monstruo de la Luna | Sly Baron (voice) |
| 2014 | Kubrick Remembered | Self |
| 2014 | Star Wars Rebels (serie) | Minister Hydan (voice) |
| 2014 | Mischief Night | Mr. Smiles |
| 2014 | Tbilisi, I Love You | — |
| 2014 | Mozart in the Jungle (serie) | Thomas Pembridge |
| 2014 | Caída libre | Thaddeus Gault |
| 2013 | Metalocalypse: The Doomstar Requiem - A Klok Opera | Vater Orlagg (voice) |
| 2013 | Zombex | Dr. Soulis |
| 2013 | The Employer | The Employer |
| 2013 | A Green Story | Barton |
| 2013 | Teen Titans Go! (serie) | Baxtory (voice) |
| 2013 | The Anatomy of a Virus: The Making of Antiviral | Himself |
| 2013 | Sanitarium | Dr. Stenson |
| 2013 | Richard The Lionheart | King Henry II |
| 2013 | Meet the Small Potatoes | Lester Koop (voice) |
| 2012 | Solo en casa 5 | Sinclair |
| 2012 | Noche de paz, noche de muerte | Sheriff Cooper |
| 2012 | Silent Hill: Revelation | Leonard Wolf |
| 2012 | Antiviral | Dr. Abendroth |
| 2012 | Excision | Mr. Cooper |
| 2012 | Vamps | Vlad |
| 2012 | Experimento Filadelfia | Morton Salinger |
| 2012 | Hollywood as Character: The Locations of The Artist | Himself |
| 2012 | The High Fructose Adventures of Annoying Orange (serie) | — |
| 2011 | Santiago Files | Narrator |
| 2011 | No Rest for the Wicked: A Basil & Moebius Adventure | Mr. Bloome |
| 2011 | Suing The Devil | Satan |
| 2011 | Golf in the Kingdom | Julian Lange |
| 2011 | Turning Like Clockwork | Self |
| 2011 | Franklin & Bash (serie) | Stanton Infeld |
| 2011 | Pound of Flesh | Professor Noah Melville |
| 2011 | LEGO Hero Factory: Ordeal of Fire | Mr. Makuro (voice) |
| 2011 | L.A., I Hate You | Harold Weintraub |
| 2010 | The Making of Easy A | Self |
| 2010 | LEGO Hero Factory: Rise of the Rookies | Mr. Makuro (voice) |
| 2010 | DC Showcase: Green Arrow | Merlyn the Magnificent (voice) |
| 2010 | Tom y Jerry conocen a Sherlock Holmes | Professor Moriarity (voice) |
| 2010 | What If Cannabis Cured Cancer | himself |
| 2010 | Monster Butler | Roy Fontaine |
| 2010 | Barry Munday | Mr. Farley |
| 2009 | Suck | Eddie Van Helsing |
| 2009 | Halloween II (H2) | Dr. Samuel Loomis |
| 2009 | Rhino el Superhéroe | Dr. Calico (voice) |
| 2008 | Delgo | Raius (voice) |
| 2008 | Bolt | Dr. Calico (voice) |
| 2008 | Oro Azul: La Guerra del Agua | Narrator |
| 2008 | Michael Lives: The Making of Halloween | Self |
| 2008 | El mentalista (serie) | Bret Stiles |
| 2008 | Coco Chanel | Marc Bouchier |
| 2008 | Never Apologize | Self |
| 2008 | Doomsday: El día del juicio | Dr. Marcus Kane |
| 2007 | Lost Kubrick: The Unfinished Films of Stanley Kubrick | Narrator |
| 2007 | Guerra y paz (serie) | Prince Bolkonski |
| 2007 | My Roman Holiday With John Steiner | Self - Archive Footage |
| 2007 | Halloween: El Origen | Dr. Samuel Loomis |
| 2007 | Phineas y Ferb (serie) | Grandpa Reginald Fletcher (voice) |
| 2007 | Masters of Science Fiction (serie) | Tibor Cargrew |
| 2007 | Exitz | Percy |
| 2007 | The List | Desmond Larochette |
| 2006 | Metalocalipsis (serie) | Vater Orlaag (voice) |
| 2006 | Psych (serie) | Ambassador Fanshaw |
| 2006 | The Curse of King Tut's Tomb (serie) | Nathan Cairns |
| 2006 | La maldición de la tumba de Tutankamon | Nathan Cairns |
| 2006 | O Lucky Malcolm! | Self |
| 2005 | Billy and Mandy Save Christmas | Baron Von Ghoulish (voice) |
| 2005 | Ídolos del aire | Dick Murdoch |
| 2005 | Jaws of the Pacific | Narrator (voice) |
| 2005 | Dinotopia: En busca del rubí mágico | Ogthar (voice) |
| 2005 | Robot Chicken (serie) | 1776 announcer/reporter |
| 2004 | Liga de la Justicia Ilimitada (serie) | Metallo (voice) |
| 2004 | Entourage: El séquito (serie) | Terrance McQuewick |
| 2004 | Cast & Crew: If.... | Self - Interviewee |
| 2004 | P3K: Pinocho 3000 | Scamboli (voice) |
| 2004 | Tempesta | Paul Valenzin |
| 2004 | Bobby Jones, la carrera de un genio | O.B. Keeler |
| 2004 | Evilenko | Andrej Romanovic |
| 2004 | Leçon de Cinéma (serie) | Self |
| 2003 | The Company | Alberto Antonelli |
| 2003 | Red Roses and Petrol | Enda |
| 2003 | Inhabited | Dr. Werner |
| 2003 | Teen Titans (serie) | Mad Mod (voice) |
| 2003 | Tempo | Walter Shrenger |
| 2003 | Fuera de control | Boad |
| 2003 | Dorian | Henry |
| 2002 | Soy espía | Gundars |
| 2002 | CSI: Miami (serie) | Darren Vogel |
| 2002 | Entre extraños | Alan Baxter |
| 2002 | Shadow Realm | Martin Hudson |
| 2002 | Monk (serie) | Julian Hodge |
| 2002 | Zona Tiza (serie) | Barney the Encyclocentipedia (voice) |
| 2002 | Ojos De Fuego 2 (serie) | John Rainbird |
| 2001 | Ley y orden: Acción criminal (serie) | Jonas Slaughter |
| 2001 | Las macabras aventuras de Billy y Mandy (serie) | Baron Von Ghoulish |
| 2001 | La Princesa de Sherwood | Sheriff of Nottingham |
| 2000 | Island of the Dead | Rupert King |
| 2000 | Gangster No. 1 | Gangster 55 |
| 2000 | St. Patrick: The Irish Legend | Quentin |
| 2000 | The David Cassidy Story | Jack Cassidy |
| 1999 | Southern Cross | Felipe Solano |
| 1999 | Los secretos de la inocencia | Uncle Morris MacIntosh |
| 1999 | The Late Late Show with Craig Kilborn (serie) | Invitado especial |
| 1998 | Las primeras nueve semanas y media | Francois Dubois |
| 1998 | The Gardener | Ben Carter |
| 1998 | Fantasy Island (serie) | Mr. Roarke |
| 1998 | Nazis: Lo oculto de la conspiración | Narrator (voice) |
| 1997 | Hugo Pool | Henry Dugay |
| 1997 | Giga Shadow | Yottskry |
| 1997 | El último destino | Captain Sean Murdoch |
| 1997 | Lexx (serie) | Yottskry |
| 1996 | Where Truth Lies | Dr. Vernon Renquist |
| 1996 | The Great War and the Shaping of the 20th Century (serie) | Czar Nicholas II / Charles Stockwell / Stephen Graham (voice) |
| 1996 | Wing Commander Academy (serie) | — |
| 1996 | Pearl (serie) | Professor Stephen Pynchon |
| 1996 | Superman: El último hijo de Krypton | John Corben (voice) |
| 1996 | Captain Simian & the Space Monkeys (serie) | Rhesus 2 (voice) |
| 1996 | Superman: La serie animada (serie) | Metallo (voice) |
| 1996 | Night Train to Venice | Stranger |
| 1996 | Stanley Kubrick: The Invisible Man | Self |
| 1996 | Yesterday's Target | Holden |
| 1996 | The Little Riders | Capt. Kessel |
| 1996 | Our Friends in the North (serie) | Benny Barratt |
| 1995 | Cyborg 3: The Recycler | Lord Talon |
| 1995 | Los chicos de la tabla redonda | Merlin |
| 1995 | Tank Girl | Kesslee |
| 1995 | Más allá del límite (serie) | Ship (voice) |
| 1995 | Dangerous Indiscretion | Roger Everett |
| 1995 | Fatal Pursuit | Bechtel |
| 1995 | The Surgeon | Dr. Stein |
| 1994 | El Autobús Mágico (serie) | (voice) |
| 1994 | Un regalo para papá | Waltzer |
| 1994 | El inmortal | Bernard Drake / Ian Morrissey |
| 1993 | Bopha! | De Villiers |
| 1993 | Late Night with Conan O'Brien (serie) | Self |
| 1993 | Vent d'est | General Smyslovsky |
| 1993 | Your Guide to Star Trek: Generations | Self |
| 1992 | Batman: La Serie Animada (serie) | Arcady Duvall (voice) |
| 1992 | Las cadenas del deseo | Hubert Bailey |
| 1991 | Pebble Mill (serie) | Self |
| 1991 | Venins | Prof. Baldwin |
| 1990 | Los abusos sexuales del dr. Russell | Dr. Derrick Russell |
| 1990 | Jezebel's Kiss | Benjamin J. Faberson |
| 1990 | Schweitzer | Albert Schweitzer |
| 1990 | Curso de 1999 | Dr. Miles Langford |
| 1990 | Estación Lunar 44 | Major Lee |
| 1989 | Blancanieves y el castillo encantado | Lord Malice (voice) |
| 1989 | Historias de la cripta (serie) | Donald Longtooth |
| 1989 | Mortacci | Edmondo |
| 1989 | Movida en Wall Street | Warden Tennant |
| 1989 | Il maestro | Walter Goldberg |
| 1988 | Asesinato en Beverly Hills | Alfie Alperin |
| 1987 | The Dame Edna Experience (serie) | Self |
| 1986 | Monte Carlo (serie) | Christopher Quinn |
| 1985 | Merlín y la espada | King Arthur |
| 1985 | Gulag | The Englishman |
| 1983 | Little Red Riding Hood | The Wolf a.k.a. Reginald Von Lupin / Narrator |
| 1983 | Volverse loco | Reggie Wanker |
| 1982 | Cuentos de las estrellas (serie) | Reginald Von Lupin / The Wolf / Narrator (voice) |
| 1982 | Hospital Britannia | Mick Travis |
| 1982 | El beso de la pantera | Paul Gallier |
| 1981 | A Documentary on the Making of 'Gore Vidal's Caligula' | Self / Caligula |
| 1979 | Los pasajeros del tiempo | H. G. Wells |
| 1979 | Calígula | Caligula |
| 1979 | El pasaje | Capt. Von Berkow |
| 1978 | She Fell Among Thieves | Richard Chandos |
| 1978 | An Audience with... (serie) | Self |
| 1977 | Beryl Reid (serie) | — |
| 1976 | Ases del cielo | Maj. John Gresham |
| 1975 | El cobarde heróico | Captain Harry Flashman / Prince Karl Magnus |
| 1973 | Un hombre de suerte | Michael Arnold Travis / Plantation Thief |
| 1971 | La naranja mecánica | Alex |
| 1971 | Great Performances (serie) | Bill |
| 1971 | Amor es mi vida | Bruce Pritchard |
| 1968 | If... (Si...) | Mick Travis |
