Filmography127 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2025 | DreamsMovie | Private Agent | 83 |
| 2014 | Sleeping BeautyMovie | The Narrator | 72 |
| 2011 | The Mill and the CrossMovie | Nicolaes Jonghelinck | 69 |
| 2011 | Glad Christmas Tidings Featuring David ArchuletaMovie | Self | 69 |
| 2010 | The Justice of WolvesMovie | Mika - Adult | 68 |
| 2009 | Transformers: Revenge of the FallenMovie | Prime #1 (voice) | 67 |
| 2009 | A Tale of Two Cities: In ConcertMovie | Narrator | 67 |
| 2008 | Rosamunde Pilcher's Four SeasonsSeries | Stephen Combe | 66 |
| 2008 | Star Wars: The Clone WarsSeries | Dr. Nuvo Vindi (voice) | 66 |
| 2008 | Mary Pickford: The Muse of the MoviesMovie | Self - Narrator | 66 |
| 2008 | Chris & Don: A Love StoryMovie | Self - Narrator | 66 |
| 2008 | Marty Feldman: Six Degrees of SeparationMovie | Self | 66 |
| 2008 | Ben 10: Alien ForceSeries | Patrick (voice) | 66 |
| 2006 | LegendsSeries | Self (uncredited) | 64 |
| 2005 | How I Met Your MotherSeries | Jefferson Van Smoot | 63 |
| 2005 | William Powell: A True GentlemanMovie | Narrator | 63 |
| 2005 | CrusaderMovie | McGovern | 63 |
| 2005 | Frederick Forsyth's IconSeries | Sir Nigel Irvine | 63 |
| 2005 | IconMovie | Sir Nigel Irvine | 63 |
| 2004 | Justice League UnlimitedSeries | Ares / Mr. Sera (voice) | 62 |
| 2004 | Moscow HeatMovie | Roger Chambers | 62 |
| 2004 | Making 'Murder on the Orient-Express'Movie | Self | 62 |
| 2004 | The Lady MusketeerSeries | D'Artagnan | 62 |
| 2002 | Austin Powers in GoldmemberMovie | Basil Exposition | 60 |
| 2002 | Presidio MedSeries | George Slingerland | 60 |
| 2001 | Law & Order: Criminal IntentSeries | Bernard Fremont | 59 |
| 2001 | Megiddo: The Omega Code 2Movie | Stone Alexander | 59 |
| 2001 | Borstal BoyMovie | Joyce | 59 |
| 2001 | In Search of PeaceMovie | Chaim Herzog (voice) | 59 |
| 2000 | Curb Your EnthusiasmSeries | Michael York | 58 |
| 2000 | Gilmore GirlsSeries | Asher Fleming | 58 |
| 2000 | The Land Before Time VII: The Stone of Cold FireMovie | Pterano (voice) | 58 |
| 2000 | One Hell of a GuyMovie | The Devil | 58 |
| 1999 | The LotSeries | Colin Rhome | 57 |
| 1999 | The Omega CodeMovie | Stone Alexander | 57 |
| 1999 | Madonna: The Video Collection 93:99Movie | Basil Exposition (segment "Beautiful Stranger") | 57 |
| 1999 | Austin Powers: The Spy Who Shagged MeMovie | Basil Exposition | 57 |
| 1999 | Puss in BootsMovie | Puss In Boots (voice) | 57 |
| 1999 | Behind the Scenes of 'Austin Powers: The Spy Who Shagged Me'Movie | Self | 57 |
| 1998 | 54Movie | Ambassador | 56 |
| 1998 | Babylon 5: In the BeginningMovie | David 'Arthur' McIntyre (arcive footage, uncredited) | 56 |
| 1998 | Wrongfully AccusedMovie | Hibbing Goodhue | 56 |
| 1998 | Merchants of VenusMovie | Alex Jakoff | 56 |
| 1998 | The TreatMovie | Simon | 56 |
| 1998 | Perfect Little AngelsMovie | Calvin Lawrence | 56 |
| 1997 | True WomenSeries | Lewis Lawshe | 55 |
| 1997 | Austin Powers: International Man of MysteryMovie | Basil Exposition | 55 |
| 1997 | A Christmas CarolMovie | Bob Cratchit (voice) | 55 |
| 1997 | Dark PlanetMovie | Winter | 55 |
| 1996 | Rosamunde Pilcher: SeptemberMovie | Edmund | 54 |
| 1996 | The RingMovie | Walmar von Gotthard | 54 |
| 1996 | Superman: The Animated SeriesSeries | Kanto (voice) | 54 |
| 1996 | Basketball MozartMovie | Narrator (voice) | 54 |
| 1995 | The Naked TruthSeries | Leland Banks | 53 |
| 1995 | SlidersSeries | — | 53 |
| 1995 | Virgin MaryMovie | Milan Vukovic | 53 |
| 1994 | The Magic School BusSeries | Harry Herpst (voice) | 52 |
| 1994 | Babylon 5Series | David 'Arthur' McIntyre | 52 |
| 1994 | The Magic FluteMovie | King Sarastro | 52 |
| 1993 | seaQuest DSVSeries | President Alexander Bourne | 51 |
| 1993 | Wide Sargasso SeaMovie | Paul Mason | 51 |
| 1993 | The Magic PaintbrushMovie | The King (voice) | 51 |
| 1993 | David CopperfieldMovie | Edward Murdstone (voice) | 51 |
| 1992 | Batman: The Animated SeriesSeries | Dr. Montague Kane (voice) | 50 |
| 1992 | Vicki!Series | Self - Guest | 50 |
| 1992 | RochadeMovie | Paul Grumbach | 50 |
| 1992 | The Long ShadowMovie | — | 50 |
| 1991 | Eline VereMovie | Lawrence St. Clare | 49 |
| 1990 | Night of the FoxMovie | Field Marshal Erwin Rommel / Caporal Berger | 48 |
| 1990 | Come See the ParadiseMovie | Dance Hall Band | 48 |
| 1989 | The SimpsonsSeries | Dr. Lionel Budgie (voice) | 47 |
| 1989 | The Return of the MusketeersMovie | D'Artagnan | 47 |
| 1989 | Judith Krantz's Till We Meet AgainSeries | Paul de Lancel | 47 |
| 1988 | The Four Minute MileMovie | Franz Stampfl | 46 |
| 1988 | The Lady and the HighwaymanMovie | King Charles II | 46 |
| 1988 | Midnight CopMovie | Karstens | 46 |
| 1988 | The Secret of the SaharaSeries | Desmond Jordan | 46 |
| 1987 | Lethal ObsessionMovie | Dr. Proper | 45 |
| 1986 | The DawnMovie | John Dawson | 44 |
| 1986 | Ponce de LeonMovie | Ponce de Leon | 44 |
| 1985 | Tall Tales & LegendsSeries | Ponce de Leon | 43 |
| 1985 | Au nom de tous les miensSeries | Martin Gray | 43 |
| 1984 | Success Is the Best RevengeMovie | Alex Rodak | 42 |
| 1983 | For Those I LovedMovie | Martin's Father / Martin Gray (age 40) | 41 |
| 1983 | The Weather in the StreetsMovie | Rollo Spencer | 41 |
| 1982 | Twilight Theater IIMovie | Self- Guest | 40 |
| 1981 | Wetten, dass..?Series | Self | 39 |
| 1980 | Final AssignmentMovie | Lyosha Petrov | 38 |
| 1979 | Knots LandingSeries | Charles Scott | 37 |
| 1979 | A Man Called IntrepidSeries | Evan Michaelian | 37 |
| 1979 | The Riddle of the SandsMovie | Charles Carruthers | 37 |
| 1978 | FedoraMovie | Self | 36 |
| 1978 | Regie: Billy WilderMovie | Self | 36 |
| 1977 | BBC2 Play of the WeekSeries | Dietrich Bonhoeffer | 35 |
| 1977 | Jesus of NazarethSeries | John the Baptist | 35 |
| 1977 | The Island of Dr. MoreauMovie | Andrew Braddock | 35 |
| 1977 | Weekend SpecialSeries | King Sarastro (voice) | 35 |
| 1977 | The Last Remake of Beau GesteMovie | Beau Geste | 35 |
| 1976 | Seven Nights in JapanMovie | Prince George | 34 |
| 1976 | A Look Into the 23rd CenturyMovie | Self | 34 |
| 1975 | Conduct UnbecomingMovie | 2nd Lieutenant Arthur Drake | 33 |
| 1974 | The Four MusketeersMovie | D'Artagnan | 32 |
| 1974 | Murder on the Orient ExpressMovie | Count Andrenyi | 32 |
| 1974 | Great ExpectationsMovie | Pip | 32 |
| 1973 | The Three MusketeersMovie | D'Artagnan | 31 |
| 1973 | Lost HorizonMovie | George Conway | 31 |
| 1973 | England Made MeMovie | Anthony Farrant | 31 |
| 1973 | Tennessee Williams' SouthMovie | — | 31 |
| 1972 | CabaretMovie | Brian Roberts | 30 |
| 1972 | The Recreation of an EraMovie | Self | 30 |
| 1971 | ZeppelinMovie | Geoffrey Richter-Douglas | 29 |
| 1971 | Film '72Series | Self | 29 |
| 1970 | Something for EveryoneMovie | Konrad Ludwig | 28 |
| 1969 | Alfred the GreatMovie | Guthrum | 27 |
| 1969 | JustineMovie | Darley | 27 |
| 1969 | The GuruMovie | Tom Pickle | 27 |
| 1968 | Romeo and JulietMovie | Tybalt | 26 |
| 1968 | Red, White, and ZeroMovie | Acrobat | 26 |
| 1967 | The Taming of the ShrewMovie | Lucentio | 25 |
| 1967 | Smashing TimeMovie | Tom Wabe | 25 |
| 1967 | AccidentMovie | William | 25 |
| 1967 | Confessions of Loving CouplesMovie | Peter | 25 |
| 1965 | GidgetSeries | — | 23 |
| 1965 | The Wild Wild WestSeries | Gupta | 23 |
| 1963 | Arrest and TrialSeries | — | 21 |
| 1962 | The Merv Griffin ShowSeries | Self | 20 |
| 1951 | Hallmark Hall of FameSeries | James Durie, Henry's older brother | 9 |