
Filmography90 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2024 | 2001: Creating Kubrick’s Space OdysseyMovie | Himself | 88 |
| 2022 | HaloSeries | Fleet Admiral Hood | 86 |
| 2020 | HuntersSeries | Klaus Rhinehart | 84 |
| 2020 | April FlowersMovie | Mr. X | 84 |
| 2020 | Valley of the GodsMovie | Ulim | 84 |
| 2020 | Gatsby in Connecticut: The Untold StoryMovie | Self | 84 |
| 2018 | Fahrenheit 451Movie | Historian | 82 |
| 2014 | The Real History of Science FictionSeries | Self | 78 |
| 2014 | Space Station 76Movie | Mr. Marlowe | 78 |
| 2014 | Infinitely Polar BearMovie | Murray Stuart | 78 |
| 2014 | Kubrick RememberedMovie | Self | 78 |
| 2013 | HENRiMovie | Henri (voice) | 77 |
| 2013 | Isn't It DeliciousMovie | Bill Weldon | 77 |
| 2009 | CastleSeries | Jonathan Tisdale | 73 |
| 2008 | The Accidental HusbandMovie | Mr. Carl Bollenbecker | 72 |
| 2007 | DamagesSeries | Julius | 71 |
| 2007 | 2001: A Space Odyssey – What Is Out There?Movie | Self | 71 |
| 2006 | The Good ShepherdMovie | Senator John Russell, Sr. | 70 |
| 2003 | Alien HunterMovie | Secretary Bayer | 67 |
| 2002 | Black Christmas RevisitedMovie | Self | 66 |
| 2001 | Stanley Kubrick: A Life in PicturesMovie | Self | 65 |
| 2001 | 2001: The Making of a MythMovie | Self | 65 |
| 2001 | WitchbladeSeries | — | 65 |
| 2001 | 2001 and BeyondMovie | Self | 65 |
| 2000 | EdSeries | Robert Stanley | 64 |
| 2000 | The Audrey Hepburn StoryMovie | Joseph Hepburn | 64 |
| 1999 | Law & Order: Special Victims UnitSeries | Judge Walter Thornburg | 63 |
| 1992 | Oh, What a NightMovie | Thorvald | 56 |
| 1990 | Law & OrderSeries | Andrew Keener | 54 |
| 1990 | Law & OrderSeries | Defense Attorney Paul Lyman | 54 |
| 1990 | Night of 100 Stars IIIMovie | Self | 54 |
| 1984 | Murder, She WroteSeries | Jason Reynard | 48 |
| 1984 | 2010Movie | Dr. David Bowman | 48 |
| 1984 | Blind DateMovie | Dr. Steiger | 48 |
| 1984 | The Time TravellerMovie | Glenn / The Next One | 48 |
| 1984 | 2010 : The Odyssey ContinuesMovie | Himself | 48 |
| 1983 | BrainWavesMovie | Julian Bedford | 47 |
| 1981 | No Place to HideMovie | Cliff Letterman | 45 |
| 1980 | Brave New WorldMovie | Thomas Grambell | 44 |
| 1980 | The Hostage TowerMovie | Mr. Smith | 44 |
| 1980 | The Starlost: The BeginningMovie | Devon | 44 |
| 1979 | The Legend of the Golden GunMovie | General Custer | 43 |
| 1979 | Leopard in the SnowMovie | Dominic Lyall | 43 |
| 1978 | Full CircleMovie | Magnus Lofting | 42 |
| 1978 | Because He's My FriendMovie | Eric | 42 |
| 1977 | Welcome to Blood CityMovie | Lewis | 41 |
| 1977 | The MannikinMovie | Dr. David Priestly | 41 |
| 1977 | Three Dangerous LadiesMovie | Dr. David Priestly | 41 |
| 1976 | Law and OrderMovie | Johnny Morrison | 40 |
| 1975 | SwitchSeries | Anthony Kirk | 39 |
| 1974 | Black ChristmasMovie | Peter | 38 |
| 1974 | Paul and MichelleMovie | Garry | 38 |
| 1973 | The StarlostSeries | Devon | 37 |
| 1973 | Paperback HeroMovie | Rick Dylan | 37 |
| 1972 | Pope JoanMovie | Dr. Stevens | 36 |
| 1972 | Devil in the BrainMovie | Oscar Minno | 36 |
| 1971 | MontserratMovie | Montserrat | 35 |
| 1970 | Black Water GoldMovie | Christofer Perdeger | 34 |
| 1969 | De SadeMovie | Marquis de Sade | 33 |
| 1968 | 2001: A Space OdysseyMovie | Dr. David Bowman | 32 |
| 1967 | The FoxMovie | Paul Grenfell | 31 |
| 1966 | Madame XMovie | Clay Anderson Jr. | 30 |
| 1966 | 2001: A Space Odyssey - A Look Behind the FutureMovie | Self | 30 |
| 1965 | Bunny Lake Is MissingMovie | Steven | 29 |
| 1964 | The Wednesday PlaySeries | Adam | 28 |
| 1964 | 12 O'Clock HighSeries | Lt. Muller | 28 |
| 1964 | Mail Order BrideMovie | Lee Carey | 28 |
| 1964 | The Thin Red LineMovie | Pvt. Doll | 28 |
| 1964 | Le ore nudeMovie | Aldo | 28 |
| 1962 | The Merv Griffin ShowSeries | Self | 26 |
| 1962 | Going My WaySeries | — | 26 |
| 1962 | The Tonight Show Starring Johnny CarsonSeries | Self | 26 |
| 1962 | David and LisaMovie | David Clemens | 26 |
| 1961 | The Mike Douglas ShowSeries | Self | 25 |
| 1961 | The New BreedSeries | Frank | 25 |
| 1961 | The DuPont Show of the WeekSeries | Lieutenant | 25 |
| 1961 | Cain's HundredSeries | Alec Benson | 25 |
| 1961 | Kraft Mystery TheatreSeries | — | 25 |
| 1961 | The Hoodlum PriestMovie | Billy Lee Jackson | 25 |
| 1961 | Alcoa PremiereSeries | — | 25 |
| 1961 | Give Us Barabbas!Movie | Elisha | 25 |
| 1960 | CheckmateSeries | Eddie Phillips | 24 |
| 1960 | Route 66Series | — | 24 |
| 1960 | Mrs. MiniverMovie | German Pilot | 24 |
| 1959 | BonanzaSeries | Bob Jolley | 23 |
| 1959 | Play of the WeekSeries | — | 23 |
| 1958 | Naked CitySeries | Joseph Ross | 22 |
| 1953 | The United States Steel HourSeries | — | 17 |
| 1951 | Hallmark Hall of FameSeries | Elisha | 15 |
| 0 | SonderMovie | Eli | — |