| 2024 | Thelma | Harvey |
| 2024 | ARK: The Animated Series | Senator Lucius Casius Virilis (voice) |
| 2024 | Cellphone | |
| 2023 | Et Tu | The Murderer |
| 2022 | Son of a Critch | Pop |
| 2022 | The Walk | McLaughlin |
| 2021 | La naranja prohibida | Narrator (voice) / Alex DeLarge |
| 2021 | Blood on the Crown | Colonel Saville |
| 2021 | A Wonderful Kingdom | Narrator |
| — | Monster Butler | Roy Fontaine |
| — | Wizardream | The Wizard Mangodor |
| — | Summerhouse | |
| — | Anatomy of Catastrophe: The Making of 'Doomsday' | Self |
| — | Last Train to Fortune | Cecil Peachtree |
| — | The Partisan | Trench coat |
| — | The Spider | Von Wessel |
| 2021 | Dreaming of Stars: An ASMR Feature Film | Self (voice) |
| 2020 | TimeCrafters: The Treasure of Pirate's Cove | Captain Lynch |
| 2020 | Time Warp Vol. 1: Midnight Madness | Self |
| 2020 | Time Warp Vol. 2: Horror and Sci-Fi | Self |
| 2020 | Free Lunch Express | Narrator |
| 2018 | Abnormal Attraction | Boogeyman |
| 2017 | Yamasong: March of the Hollows | Lord Geer |
| 2017 | Mississippi Murder | McGowen |
| 2017 | Grow House | Dr. Doobie |
| 2016 | Perché sono un genio! - Lorenza Mazzetti | Himself |
| 2015 | Kids vs Monsters | Boss Monster |
| 2015 | Bereave | Garvey |
| 2015 | Душа шпиона | |
| 2015 | Oceanus: Act One | Triton (Ship's Computer) |
| 2015 | Cowboys & Engines | Dr. Clay |
| 2014 | Shock Value | Edmund Dean Huntley |
| 2014 | Kubrick Remembered | Self |
| 2013 | Richard The Lionheart | King Henry II |
| 2013 | A Green Story | Barton |
| 2013 | Meet the Small Potatoes | Lester Koop (voice) |
| — | Robot Dracula | Robot Dracula |
| 2023 | Moving On | Howard |
| 2023 | Metalocalypse: Army of the Doomstar | Vader Orlag (voice) |
| 2022 | Oče St | Monsignor Kelly |
| 2022 | She Will | Hathbourne |
| 2021 | Opravljivka | Roger Menzies |
| 2021 | Pups Alone | Oliver (voice) |
| 2020 | Božična kronika 2 | Hakan |
| 2020 | Truth Seekers | Richard |
| 2020 | The Big Ugly | Harris |
| 2020 | Skin: A History of Nudity in the Movies | Self |
| 2020 | Kubrick by Kubrick | Self (archive footage) |
| 2019 | Bombshell | Rupert Murdoch |
| 2019 | Scooby-Doo and Guess Who? | Malcolm McDowell (voice) |
| 2018 | Corbin Nash | Blind Prophet |
| 2018 | Dreams I Never Had | Judge Messner |
| 2017 | Castlevania | Varney of London (voice) |
| 2017 | American Satan | Mr. Capricorn |
| 2017 | Death Race 2050 | Chairman |
| 2017 | Walk of Fame | Evan Polus |
| 2017 | Jeff & Some Aliens | Zib Zog (voice) |
| 2017 | Heroes Manufactured | Self (archive footage) |
| 2016 | 31 | Father Murder |
| 2016 | The Search for Life in Space | Narrator |
| 2016 | The Mystery of Casa Matusita | Supay |
| 2015 | We Bare Bears | Professor Lampwick (voice) |
| 2015 | Chicaški zdravniki | Marvin Jaffrey |
| 2015 | Some Kind of Beautiful | Gordon |
| 2015 | Scooby-Doo! Moon Monster Madness | Sly Baron (voice) |
| 2015 | Dawn of the Croods | Skermiggleflop (voice) |
| 2015 | The Black Hole | Mr. Simms |
| 2015 | Lady Psycho Killer | Gerald Portersen |
| 2014 | Star Wars Rebels | Minister Hydan (voice) |
| 2014 | Mozart in the Jungle | Thomas Pembridge |
| 2014 | Free Fall | Thaddeus Gault |
| 2014 | Mischief Night | Mr. Smiles |
| 2014 | Tbilisi, I Love You | |
| 2013 | Teen Titans Go! | Baxtory (voice) |
| 2013 | Sanitarium | Dr. Stenson |
| 2013 | Metalocalypse: The Doomstar Requiem - A Klok Opera | Vater Orlagg (voice) |
| 2013 | The Employer | The Employer |
| 2013 | Zombex | Dr. Soulis |
| 2013 | The Anatomy of a Virus: The Making of Antiviral | Himself |
| 2012 | Silent Hill: Revelation 3D | Leonard Wolf |
| 2012 | Excision | Mr. Cooper |
| 2012 | Sam doma 5 | Sinclair |
| 2012 | Antiviral | Dr. Abendroth |
| 2012 | Silent Night | Sheriff Cooper |
| 2012 | Vamps | Vlad |
| 2012 | The Philadelphia Experiment | Morton Salinger |
| 2012 | Final Cut: Hölgyeim és uraim | (archive footage) |
| 2012 | The High Fructose Adventures of Annoying Orange | |
| 2012 | Stanley Kubrick in Focus | Self |
| 2012 | LEGO Hero Factory: Breakout | Akiyama Makuro |
| 2012 | The Artist: The Making of an American Romance | Self |
| 2012 | Hollywood as Character: The Locations of The Artist | Himself |
| 2011 | Umetnik | The Butler |
| 2011 | Franklin & Bash | Stanton Infeld |
| 2011 | Suing The Devil | Satan |
| 2011 | Il était une fois… Orange Mécanique | Self |
| 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 |
| 2011 | Turning Like Clockwork | Self |
| 2011 | Golf in the Kingdom | Julian Lange |
| 2011 | No Rest for the Wicked: A Basil & Moebius Adventure | Mr. Bloome |
| 2011 | Santiago Files | Narrator |
| 2010 | Lahka punca | Principal Gibbons |
| 2010 | Knjiga odrešitve | Lombardi |
| 2010 | DC Showcase: Green Arrow | Merlyn the Magnificent (voice) |
| 2010 | Barry Munday | Mr. Farley |
| 2010 | Tom in Jerry srečata Sherlocka Holmesa | Professor Moriarity (voice) |
| 2010 | DC Showcase Original Shorts Collection | Merlyn the Magnificent (segment "Green Arrow") (voice) |
| 2010 | LEGO Hero Factory: Rise of the Rookies | Mr. Makuro (voice) |
| 2010 | The Invocation | Self |
| 2010 | What If Cannabis Cured Cancer | himself |
| 2010 | The Making of Easy A | Self |
| 2009 | Community | Professor Cornwallis |
| 2009 | Halloween II | Dr. Samuel Loomis |
| 2009 | Suck | Eddie Van Helsing |
| 2009 | Super Rhino | Dr. Calico (voice) |
| 2009 | Phineas and Ferb Christmas Vacation! | Grandpa Fletcher (voice) |
| 2009 | Starz Inside - Unforgettably Evil | Self |
| 2008 | Bolt | Dr. Calico (voice) |
| 2008 | The Mentalist | Bret Stiles |
| 2008 | Doomsday | Dr. Marcus Kane |
| 2008 | Coco Chanel | Marc Bouchier |
| 2008 | Delgo | Raius (voice) |
| 2008 | Blue Gold: World Water Wars | Narrator |
| 2008 | Michael Lives: The Making of Halloween | Self |
| 2008 | Never Apologize | Self |
| 2007 | Noč čarovnic | Dr. Samuel Loomis |
| 2007 | Phineas and Ferb | |
| 2007 | Phineas and Ferb | Grandpa Reg (voice) |
| 2007 | Phineas and Ferb | Grandpa Reginald Fletcher (voice) |
| 2007 | Robot Chicken: Star Wars | Orientation Instructor (voice) |
| 2007 | Masters of Science Fiction | Tibor Cargrew |
| 2007 | War and Peace | Prince Bolkonski |
| 2007 | The List | Desmond Larochette |
| 2007 | Lost Kubrick: The Unfinished Films of Stanley Kubrick | Narrator |
| 2007 | My Roman Holiday With John Steiner | Self - Archive Footage |
| 2007 | Exitz | Percy |
| 2006 | Heroes | |
| 2006 | Heroes | Daniel Linderman |
| 2006 | Psych | Ambassador Fanshaw |
| 2006 | Metalocalypse | Vater Orlaag (voice) |
| 2006 | The Curse of King Tut's Tomb | Nathan Cairns |
| 2006 | Cut Off | James Burton |
| 2006 | O Lucky Malcolm! | Self |
| 2006 | The Curse of King Tut's Tomb | Nathan Cairns |
| 2006 | Bye Bye Benjamin | Mr. Coleman |
| 2005 | Robot Chicken | 1776 announcer/reporter |
| 2005 | Dinotopia: Quest for the Ruby Sunstone | Ogthar (voice) |
| 2005 | Зеркальные войны: Отражение первое | Dick Murdoch |
| 2005 | Billy and Mandy Save Christmas | Baron Von Ghoulish (voice) |
| 2005 | Rag Tale | Richard Morton |
| 2005 | Jaws of the Pacific | Narrator (voice) |
| 2004 | Hidalgo | Major Davenport |
| 2004 | Justice League Unlimited | Metallo (voice) |
| 2004 | In Good Company | Teddy K (uncredited) |
| 2004 | Entourage | |
| 2004 | Entourage | Terrance McQuewick |
| 2004 | Pinocchio 3000 | Scamboli (voice) |
| 2004 | Evilenko | Andrej Romanovic |
| 2004 | Bobby Jones: Stroke of Genius | O.B. Keeler |
| 2004 | Tempesta | Paul Valenzin |
| 2004 | Leçon de Cinéma | Self |
| 2004 | Cast & Crew: If.... | Self - Interviewee |
| 2003 | Teen Titans | Mad Mod (voice) |
| 2003 | I'll Sleep When I'm Dead | Boad |
| 2003 | The Company | Alberto Antonelli |
| 2003 | Inhabited | Dr. Werner |
| 2003 | Tempo | Walter Shrenger |
| 2003 | Dorian | Henry |
| 2003 | Red Roses and Petrol | Enda |
| 2002 | CSI: Miami | |
| 2002 | CSI: Miami | Darren Vogel |
| 2002 | Monk | Julian Hodge |
| 2002 | I Spy | Gundars |
| 2002 | Firestarter: Rekindled | John Rainbird |
| 2002 | The Barber | Dexter Miles |
| 2002 | ChalkZone | Barney the Encyclocentipedia (voice) |
| 2002 | Between Strangers | Alan Baxter |
| 2002 | Beings | Ian |
| 2002 | Shadow Realm | Martin Hudson |
| 2001 | The Grim Adventures of Billy and Mandy | Baron Von Ghoulish |
| 2001 | Just Visiting | Wizard |
| 2001 | Law & Order: Criminal Intent | Jonas Slaughter |
| 2001 | Stanley Kubrick: A Life in Pictures | Self |
| 2001 | Princess of Thieves | Sheriff of Nottingham |
| 2001 | Night Visions | Martin |
| 2001 | The Void | Dr. Thomas Abernathy |
| 2000 | Gangster No. 1 | Gangster 55 |
| 2000 | Island of the Dead | Rupert King |
| 2000 | Still Tickin': The Return of 'A Clockwork Orange' | Self |
| 2000 | St. Patrick: The Irish Legend | Quentin |
| 2000 | The David Cassidy Story | Jack Cassidy |
| 1999 | Can of Worms | Barnabus (voice) |
| 1999 | My Life So Far | Uncle Morris MacIntosh |
| 1999 | The Late Late Show with Craig Kilborn | Self - Guest |
| 1999 | Y2K | Seward |
| 1999 | Love Lies Bleeding | Malcolm |
| 1999 | Southern Cross | Felipe Solano |
| 1999 | Stanley and Us | Self |
| 1999 | Sharks of the Deep Blue | Narrator |
| 1998 | Fantasy Island | Mr. Roarke |
| 1998 | День полнолуния | |
| 1998 | The First 9½ Weeks | Francois Dubois |
| 1998 | Nazis: The Occult Conspiracy | Narrator (voice) |
| 1998 | The Gardener | Ben Carter |
| 1998 | AFI's 100 Years... 100 Movies | Self |
| 1997 | South Park | A British Person (voice) |
| 1997 | Mr. Magoo | Austin Cloquet |
| 1997 | Lexx | Yottskry |
| 1997 | Hugo Pool | Henry Dugay |
| 1997 | 2103: The Deadly Wake | Captain Sean Murdoch |
| 1997 | Asylum | Sullivan Rane / Doc |
| 1997 | Giga Shadow | Yottskry |
| 1996 | Superman: The Animated Series | John Corben (voice) |
| 1996 | Superman: The Animated Series | John Corben / Metallo (voice) |
| 1996 | Superman: The Animated Series | Metallo (voice) |
| 1996 | Superman: The Last Son of Krypton | John Corben (voice) |
| 1996 | Night Train to Venice | Stranger |
| 1996 | Our Friends in the North | Benny Barratt |
| 1996 | Yesterday's Target | Holden |
| 1996 | Where Truth Lies | Dr. Vernon Renquist |
| 1996 | Stanley Kubrick: The Invisible Man | Self |
| 1996 | Captain Simian & the Space Monkeys | Rhesus 2 (voice) |
| 1996 | Sex, Censorship and the Silver Screen | Quote Reader |
| 1996 | The Great War and the Shaping of the 20th Century | Czar Nicholas II / Charles Stockwell / Stephen Graham (voice) |
| 1996 | Ringer | Noel |
| 1996 | Wing Commander Academy | |
| 1996 | Pearl | Professor Stephen Pynchon |
| 1996 | The Little Riders | Capt. Kessel |
| 1995 | Tank Girl | Kesslee |
| 1995 | The Outer Limits | Ship (voice) |
| 1995 | Fist of the North Star | Ryuken |
| 1995 | Cyborg 3: The Recycler | Lord Talon |
| 1995 | Exquisite Tenderness | Dr. Stein |
| 1995 | Kids of the Round Table | Merlin |
| 1995 | Dangerous Indiscretion | Roger Everett |
| 1995 | Fatal Pursuit | Bechtel |
| 1994 | Star Trek: Generations | Dr. Tolian Soran |
| 1994 | Spider-Man | Whistler (voice) |
| 1994 | Milk Money | Waltzer |
| 1994 | The Magic School Bus | (voice) |
| 1994 | Seasons of the Heart | Alfred McGuinness |
| 1994 | The Man Who Wouldn't Die | Bernard Drake / Ian Morrissey |
| 1993 | Frasier | Dr. Bruga (voice) |
| 1993 | Late Night with Conan O'Brien | Self |
| 1993 | Bopha! | De Villiers |
| 1993 | Vent d'est | General Smyslovsky |
| 1993 | Your Guide to Star Trek: Generations | Self |
| 1992 | Batman: The Animated Series | Arcady Duvall (voice) |
| 1992 | The Player | Malcolm McDowell |
| 1992 | Chain of Desire | Hubert Bailey |
| 1991 | Цареубийца | Timofeyev / Yurovsky |
| 1991 | Venins | Prof. Baldwin |
| 1991 | Pebble Mill | Self |
| 1990 | Class of 1999 | Dr. Miles Langford |
| 1990 | Moon 44 | Major Lee |
| 1990 | Disturbed | Dr. Derrick Russell |
| 1990 | Jezebel's Kiss | Benjamin J. Faberson |
| 1990 | Schweitzer | Albert Schweitzer |
| 1990 | Maggio musicale | Pier Francesco Ferraioli |
| 1989 | Tales from the Crypt | Donald Longtooth |
| 1989 | Happily Ever After | Lord Malice (voice) |
| 1989 | Mortacci | Edmondo |
| 1989 | Buy & Cell | Warden Tennant |
| 1989 | Il maestro | Walter Goldberg |
| 1988 | Sunset | Alfie Alperin |
| 1988 | An Audience With Victoria Wood | Himself |
| 1987 | The Caller | The Caller |
| 1987 | The Dame Edna Experience | Self |
| 1986 | Monte Carlo | Christopher Quinn |
| 1985 | Gulag | The Englishman |
| 1985 | Arthur the King | King Arthur |
| 1983 | Blue Thunder | Cochrane |
| 1983 | Get Crazy | Reggie Wanker |
| 1983 | Cross Creek | Max Perkins |
| 1983 | Little Red Riding Hood | The Wolf a.k.a. Reginald Von Lupin / Narrator |
| 1982 | Cat People | Paul Gallier |
| 1982 | Britannia Hospital | Mick Travis |
| 1982 | Faerie Tale Theatre | Reginald Von Lupin / The Wolf / Narrator (voice) |
| 1982 | The Compleat Beatles | Narrator |
| 1981 | A Documentary on the Making of 'Gore Vidal's Caligula' | Self / Caligula |
| 1980 | Look Back in Anger | Jimmy Porter |
| 1979 | Kaligula | Caligula |
| 1979 | Time After Time | H. G. Wells |
| 1979 | The Passage | Capt. Von Berkow |
| 1979 | Echoes of the Sixties: A Musical Trip | Self |
| 1978 | An Audience with... | Self |
| 1978 | She Fell Among Thieves | Richard Chandos |
| 1977 | BBC2 Play of the Week | Chandos |
| 1977 | Beryl Reid | |
| 1976 | Aces High | Maj. John Gresham |
| 1976 | Voyage of the Damned | Max Gunter |
| 1976 | The Collection | Bill |
| 1976 | Laurence Olivier Presents | |
| 1975 | Royal Flash | Captain Harry Flashman / Prince Karl Magnus |
| 1973 | O Lucky Man! | Michael Arnold Travis / Plantation Thief |
| 1971 | A Clockwork Orange | Alex |
| 1971 | The Raging Moon | Bruce Pritchard |
| 1971 | Great Performances | Bill |
| 1970 | Figures in a Landscape | Ansell |
| 1968 | if.... | Mick Travis |
