
Filmography42 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2026 | The Sixty Year Mission: How Star Trek Changed Television and the WorldMovie | Self | 92 |
| 1999 | Dash and LillyMovie | Joseph Rauh | 65 |
| 1992 | LincolnMovie | Joshua Speed (voice) | 58 |
| 1990 | Law & OrderSeries | Cyrus Weaver | 56 |
| 1989 | Star Trek V: The Final FrontierMovie | Sybok | 55 |
| 1988 | CocktailMovie | Richard Mooney | 54 |
| 1988 | Messenger of DeathMovie | Homer Foxx | 54 |
| 1986 | One Terrific GuyMovie | Jim Burton | 52 |
| 1984 | Murder, She WroteSeries | Lt. Steve Warren | 50 |
| 1984 | Murder, She WroteSeries | John Galloway | 50 |
| 1984 | Not for PublicationMovie | Mayor Franklyn | 50 |
| 1982 | HotelSeries | — | 48 |
| 1981 | See China and DieMovie | Dr. Glickman | 47 |
| 1980 | The Mating SeasonMovie | Harry McClain | 46 |
| 1979 | IkeSeries | Maj. Richard Arnold | 45 |
| 1979 | The PromiseMovie | Dr. Peter Gregson | 45 |
| 1978 | Return of the SaintSeries | Bruno Walters | 44 |
| 1977 | The November PlanMovie | Noel Crosman | 43 |
| 1976 | The Lindbergh Kidnapping CaseMovie | Gov. Hal Hoffman | 42 |
| 1975 | Winner Take AllMovie | Bill Anderson | 41 |
| 1974 | Harry OSeries | — | 40 |
| 1974 | Murder ImpossibleMovie | Patch | 40 |
| 1974 | Panic on the 5:22Movie | Lawrence Lewis | 40 |
| 1974 | Death SentenceMovie | Don Davies | 40 |
| 1973 | Barnaby JonesSeries | Elliot Rexford / Lt. Damon Maxwell | 39 |
| 1973 | And the Bones Came TogetherMovie | Robert Cooper | 39 |
| 1972 | The RookiesSeries | — | 38 |
| 1972 | The Delphi Bureau: The Merchant of Death AssignmentMovie | Glenn Garth Gregory | 38 |
| 1972 | CorkyMovie | Wayne Nesbitt | 38 |
| 1972 | Lights OutMovie | Sabina's second Husband Howard | 38 |
| 1972 | Moonwalk OneMovie | Narrator | 38 |
| 1971 | ColumboSeries | Mark McAndrews | 37 |
| 1971 | Such Good FriendsMovie | Richard | 37 |
| 1970 | The Bold Ones: The SenatorSeries | Chancellor Steinitz | 36 |
| 1970 | Dan AugustSeries | Arthur Coleman | 36 |
| 1970 | The Boys in the BandMovie | Hank | 36 |
| 1970 | The Mary Tyler Moore ShowSeries | Ken Arnold | 36 |
| 1969 | Where the Heart IsSeries | — | 35 |
| 1965 | The F.B.I.Series | Danzer | 31 |
| 1961 | The Mike Douglas ShowSeries | Self | 27 |
| 1959 | BonanzaSeries | Barnabas Freed | 25 |
| 1954 | The Secret StormSeries | — | 20 |