| Ano | Nota | Título | Personagem |
|---|---|---|---|
| 2025 | The Window on Death Row | Executive Producer | |
| 2024 | M*A*S*H: The Comedy That Changed Television | Self | |
| 2022 | M*A*S*H: When Television Changed Forever | Self | |
| 2018 | Bucky and the Squirrels | Mike Farrell | |
| 2013 | Valentino's Ghost | Narrator (voice) | |
| 2007 | Out at the Wedding | Father of the Bride | |
| 2006 | Superman: Brainiac Ataca | Jonathan Kent (voice) | |
| 2005 | Locusts | Lyle Rierden | |
| 2004 | The Clinic | Dr. Cyrus Gachet | |
| 2003 | The Crooked E: The Unshredded Truth About Enron | Kenneth Lay | |
| 2002 | M*A*S*H: 30th Anniversary Reunion | Himself/Host | |
| 2000 | The Tulsa Lynching of 1921: A Hidden Story | - | |
| 1998 | Patch Adams: O Amor é Contagioso | Producer | |
| 1998 | Behind the Laughs | Host | |
| 1997 | Sins of the Mind | William | |
| 1997 | Sins of the Mind | Executive Producer | |
| 1996 | Superman: The Last Son of Krypton | Jonathan Kent (voice) | |
| 1996 | Hanged on a Twisted Cross | Bonhoeffer | |
| 1995 | The Killers Within | Congressman Clayton | |
| 1994 | Hart to Hart: Old Friends Never Die | Frank Crane | |
| 1991 | Memories of M*A*S*H | Self / BJ Hunnicutt | |
| 1991 | Silent Motive | Detective Paul Trella | |
| 1991 | Silent Motive | Producer | |
| 1991 | The Whereabouts of Jenny | Van Zandt | |
| 1991 | Lockdown | Prentiss | |
| 1990 | The Price of the Bride | Joe Roth | |
| 1989 | Conspiração Tóxica | Tim McFall | |
| 1989 | Conspiração Tóxica | Story | |
| 1989 | Conspiração Tóxica | Executive Producer | |
| 1989 | A Deadly Silence | Atty. Gianelli | |
| 1988 | UFO Cover-Up?: Live! | - | |
| 1988 | Run Till You Fall | Director | |
| 1988 | Dominick and Eugene | Producer | |
| 1986 | Vanishing Act | Harry Kenyon | |
| 1985 | Video Shock: The Revolution in Your Living Room | Self - Host | |
| 1985 | Private Sessions | Dr. Joe Braden | |
| 1984 | J.F.K.: A One-Man Show | John Fitzgerald Kennedy | |
| 1983 | Choices of the Heart | Ambassador Robert E. White | |
| 1983 | Memorial Day | Matt Walker | |
| 1983 | Citizen: The Political Life of Allard K. Lowenstein | Executive Producer | |
| 1982 | Prime Suspect | Frank Staplin | |
| 1981 | El Salvador: Another Vietnam | Narrator | |
| 1981 | Good Evening Captain | Self | |
| 1980 | Damien: The Leper Priest | William Robertson | |
| 1979 | Letters from Frank | Richard Miller | |
| 1979 | Sex and the Single Parent | George McGee | |
| 1979 | Ebony, Ivory and Jade | Story | |
| 1979 | Ebony, Ivory and Jade | Teleplay | |
| 1978 | Battered | Michael Hawks | |
| 1974 | Live Again, Die Again | James Carmichael | |
| 1974 | The Questor Tapes | Jerry Robinson | |
| 1973 | She Cried Murder | Walter Stepanic | |
| 1973 | Nightmare Step | Steven | |
| 1972 | The Longest Night | Wills | |
| 1972 | Doomsday Machine | 1st Reporter | |
| 1968 | Dayton's Devils | Voucher Captain | |
| 1968 | Panic in the City | Dick Blaine | |
| 1968 | Na Mira da Morte | Man in Phonebooth | |
| 1967 | A Primeira Noite de um Homem | Hotel Lobby Bellhop (uncredited) | |
| 1967 | No Assombroso Mundo da Lua | Houston Engineer (uncredited) | |
| 1963 | Pavilhão 7 | Patient (uncredited) | |
| - | The Strawberry | Herb |
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