| 2004 | Broadway's Lost Treasures II | Don Quixote (segment "Man Of La Mancha") | ★ 8.0 |
| 2003 | Hugh Hefner: American Playboy | Narrator (voice) | ★ 9.0 |
| 2002 | The Men Who Made the Movies: Samuel Fuller | Joey (archive footage) | ★ 5.8 |
| 2001 | Heroes of Horror | Narrator | ★ 9.0 |
| 1999 | Blue Moon | Jimmy Keating | ★ 3.8 |
| 1998 | Patch Adams | Dr. Titan | ★ 7.3 |
| 1998 | The Gates of Jerusalem: A History of the Holy City | Host | ★ 7.0 |
| 1997 | Wolves at Our Door | Narrator | ★ 8.0 |
| 1997 | Vincent Price: The Versatile Villain | Narrator | ★ 6.4 |
| 1997 | The Sonoran Desert: A Violent Eden | Narrator (voice) | ★ 0.0 |
| 1997 | Time to Say Goodbye? | Dr. Gerald Klooster | ★ 4.0 |
| 1997 | Tigers of the Snow | Narrator (voice) | ★ 7.3 |
| 1997 | Audrey Hepburn: The Fairest Lady | Narrator | ★ 8.0 |
| 1997 | Henry Fonda: Hollywood's Quiet Hero | Self | ★ 0.0 |
| 1996 | Mary & Tim | Ron Melville | ★ 5.5 |
| 1996 | Peter Lorre: The Master of Menace | Self - Narrator (voice) | ★ 6.0 |
| 1996 | Detektiv Rockford: Russisches Roulette | Frank Dougherty | ★ 5.8 |
| 1996 | Phenomenon - Das Unmögliche wird wahr | Dr. Wellin | ★ 6.5 |
| 1995 | Lon Chaney: Son of a Thousand Faces | Narrator | ★ 9.0 |
| 1995 | Darryl F. Zanuck: 20th Century Filmmaker | Narrator | ★ 4.0 |
| 1995 | Secrets | Dr. Will Berter | ★ 6.0 |
| 1995 | 30 Years of National Geographic Specials | Self - Narrator | ★ 7.0 |
| 1994 | A Passion for Justice: The Hazel Brannon Smith Story | Earl Clayburn | ★ 0.0 |
| 1993 | Das Matthäus-Evangelium | Matthew | ★ 8.8 |
| 1993 | Jurassic Park | Jurassic Park Tour Voice (voice) | ★ 8.0 |
| 1992 | Mysteries Underground | Self - Narrator | ★ 7.0 |
| 1992 | Mastergate | Archer Bowman | ★ 2.0 |
| 1992 | Giant Bears of Kodiak Island | Narrator | ★ 0.0 |
| 1991 | Absolute Strangers | Dr. RJ Cannon | ★ 0.0 |
| 1991 | Gleichheit kennt keine Farbe | Chief Justice Earl Warren | ★ 6.5 |
| 1991 | National Geographic: Splendid Stones | Narrator | ★ 0.0 |
| 1990 | Rauchende Colts: Der letzte Apache | Chalk Brighton | ★ 6.5 |
| 1990 | Aladdin | The Magician | ★ 5.1 |
| 1989 | The Final Days | J. Fred Buzhardt | ★ 6.8 |
| 1989 | To The Limit | Narrator | ★ 7.5 |
| 1988 | My First Love | Sam Morrissey | ★ 10.0 |
| 1988 | Cary Grant: A Celebration of a Leading Man | Narrator | ★ 7.0 |
| 1988 | Australia's Twilight Of The Dreamtime | Narrator | ★ 0.0 |
| 1988 | Australia's Aborigines | Narrator | ★ 0.0 |
| 1988 | National Geographic: White Wolf | Narrator (voice) | ★ 0.0 |
| 1987 | Grace Kelly: The American Princess | Narrator (voice) | ★ 6.5 |
| 1987 | Lions of the African Night | | ★ 0.0 |
| 1987 | Treasures From The Past | Himself - Narrator | ★ 0.0 |
| 1986 | Howard - Ein tierischer Held | The Cosmos (voice) | ★ 5.4 |
| 1986 | Die Abenteuer von Huckleberry Finn | Col. Grangerford | ★ 6.7 |
| 1985 | Do You Remember Love | George Hollis | ★ 0.0 |
| 1985 | The Bad Seed | Richard Bravo | ★ 6.2 |
| 1985 | Ballad of the Irish Horse | Narrator (voice) | ★ 0.0 |
| 1985 | The Canterville Ghost | Sir Simon De Canterville | ★ 6.0 |
| 1982 | Night of 100 Stars | Self | ★ 6.7 |
| 1982 | Pray TV | Rev. Gus Keiffer | ★ 0.0 |
| 1981 | Isabel's Choice | Lyman Jones | ★ 0.0 |
| 1981 | Golden Gate | Thomas J. Kingsley | ★ 0.0 |
| 1981 | Endlose Liebe | Arthur | ★ 5.7 |
| 1981 | Some Call Them ... Freaks | Host (Self) | ★ 0.0 |
| 1980 | Angel on My Shoulder | Nick | ★ 6.0 |
| 1979 | The New Media Bible: The Gospel According to St. Luke | Narrator/St. Luke | ★ 0.0 |
| 1977 | Auf der Suche nach Mr. Goodbar | Mr. Dunn | ★ 6.3 |
| 1976 | The Macahans | Timothy Macahan | ★ 6.7 |
| 1975 | Friendly Persuasion | Jess Birdwell | ★ 0.0 |
| 1974 | Der Kleine Prinz | The Pilot | ★ 6.8 |
| 1972 | Jigsaw | DA Dan Bellington | ★ 0.0 |
| 1971 | All the Way Home | Jay Follet | ★ 0.0 |
| 1971 | Murder Once Removed | Frank Manning | ★ 5.1 |
| 1971 | Incident in San Francisco | Robert Harmon | ★ 3.5 |
| 1970 | a.k.a. Cassius Clay | Himself | ★ 7.5 |
| 1970 | The Ceremony of Innocence | King Ethelred | ★ 0.0 |
| National Geographic's Rain Forest | Self - Narrator | ★ 0.0 |
| 1969 | ...und die Alpträume gehen weiter | SS-Gruppenführer Helmut Arndt / Josef Strobe | ★ 7.1 |
| 1969 | Nacht ohne Zeugen | Woodrow Wilson King | ★ 5.5 |
| 1958 | The Power of the Resurrection | Peter | ★ 0.0 |
| 1957 | Spanish Affair | Merritt Blake | ★ 5.5 |
| 1955 | Eine Stadt geht durch die Hölle | John Patterson | ★ 6.6 |
| 1955 | Die Saat der Gewalt | Joshua Y. Edwards | ★ 6.9 |
| 1955 | Patterns | Fred Staples | ★ 7.0 |
| 1953 | Polizei greift ein | Joey | ★ 7.4 |
| 1952 | Eight Iron Men | Pvt. Coke | ★ 6.8 |
| 1952 | The Sniper | James G. Kent | ★ 6.7 |
| 1951 | Die Spur führt zum Hafen | Tom Clancy | ★ 6.6 |
