| 2024 | Lost & Found in Cleveland | Dr. Austin Raybourne |
| 2024 | Wild Cards (serie) | Jonathan Ashford |
| 2023 | Robert de Niro, el silencio como arma | Self (archive footage) |
| 2023 | Downwind | Self Narrator |
| 2022 | The Jennifer Hudson Show (serie) | — |
| 2021 | Benedict Arnold: Hero Betrayed | Narrator |
| 2021 | Doce huérfanos | Doc Hall |
| 2020 | The Berrigans: Devout and Dangerous | Self |
| 2020 | Can Art Stop a Bullet: William Kelly's Big Picture | Self |
| 2020 | La princesa de la fila | John Austin |
| 2020 | A West Wing Special to Benefit When We All Vote | President Josiah Bartlet |
| 2019 | Bench | — |
| 2018 | The Boxcar Children: Surprise Island | James Alden (voice) |
| 2018 | American Dynasties: The Kennedys (serie) | Narrator (voice) |
| 2018 | Come Sunday | Oral Roberts |
| 2017 | Anne of Green Gables: Fire & Dew | Matthew Cuthbert |
| 2017 | Anne of Green Gables: The Good Stars | Matthew Cuthbert |
| 2017 | Is O.J. Innocent? The Missing Evidence (serie) | Narrator (voice) |
| 2017 | Dreamland: Mark Twain's Journey to Jerusalem | Narrator |
| 2016 | The Vessel (El Navío) | Father Douglas |
| 2016 | Back to the Lane | — |
| 2016 | Ana de las tejas verdes | Matthew Cuthbert |
| 2015 | Insignia de honor | Captain Daniel Richards |
| 2015 | Robert Bly: A Thousand Years of Joy | Self |
| 2015 | Grace y Frankie (serie) | Robert Hanson |
| 2014 | A Prayer for Rain | Warren Anderson |
| 2014 | Trash, ladrones de esperanza | Padre Juilliard |
| 2014 | The Boxcar Children | Grandfather Alden (voice) |
| 2014 | Holbrook/Twain: An American Odyssey | Self |
| 2014 | Last Week Tonight with John Oliver (serie) | Self |
| 2013 | Amazonia | — |
| 2013 | The Making of the Wonderful Wizard of Oz | Narrator |
| 2013 | Jerzy Popieluszko: Messenger of the Truth | Narrator (voice) |
| 2013 | Making 'Badlands' | Self |
| 2013 | Tales from the Warner Bros. Lot | Self |
| 2012 | Rite of Passage: The Amazing Spider-Man Reborn | Self |
| 2012 | Death By China | Narrator |
| 2012 | Terapia con Charlie (serie) | Martin Goodson |
| 2012 | The Amazing Spider-Man | Uncle Ben |
| 2012 | Buscando un amigo para el fin del mundo | Frank Petersen |
| 2012 | Stella Days | Fr. Daniel Barry |
| 2012 | Brothers on the Line | Narrator |
| 2011 | La sombra de la traición | Tom Highland |
| 2011 | Holy Man: The USA vs. Douglas White | Narrator |
| 2011 | 9/11 Truth: Hollywood Speaks Up | Self |
| 2011 | Sharkwise | Narrator |
| 2011 | Miller's Tale | Self |
| 2010 | Los secretos del caso Kennedy | Narrator |
| 2010 | El camino | Tom |
| 2010 | A Conversation with Martin Sheen | Self |
| 2009 | Gloves of Stone | Dr. Frank Irwin |
| 2009 | Cuando ocurre el amor | Donald, Burke's Father-in-Law |
| 2009 | Franz Jagerstätter: A Man of Conscience | Franz Jagerstätter (voice) |
| 2009 | La conspiración del poder | Raymond Burke |
| 2009 | White House Revealed | Self- Narrator (voice) |
| 2008 | Man in the Mirror | Fallen Soldier / JC Super Star / Man in Black |
| 2008 | Vietnam: American Holocaust | Voice |
| 2008 | Pirate for the Sea | Self |
| 2008 | The Garden | Self |
| 2008 | The End of Poverty? | Self - Narrator |
| 2008 | They Killed Sister Dorothy | Narrator |
| 2008 | Notes on an American Film Director at Work | Self |
| 2007 | Eyewitness DVD: Weather | Narrator |
| 2007 | Andrew Jackson: Good, Evil & The Presidency | Narrator |
| 2007 | Diners, Drive-Ins and Dives (serie) | Self |
| 2007 | Ciudad del silencio | George Morgan |
| 2007 | The Graham Norton Show (serie) | Self |
| 2007 | Confessions Of An Innocent Man | Self - Narrator |
| 2006 | America's Game: The Super Bowl Champions (serie) | Narrator (voice) |
| 2006 | Infiltrados | Queenan |
| 2006 | The Politics of the Dead Zone | Self |
| 2006 | Studio 60 (serie) | Radio Host |
| 2006 | The One Show (serie) | Self |
| 2006 | ¿Quién mató al coche eléctrico? | Narrator (voice) |
| 2006 | 10 Days That Unexpectedly Changed America (serie) | — |
| 2005 | The Colbert Report (serie) | — |
| 2005 | James Dean: por siempre joven | Narrator (voice) |
| 2005 | The Friday Night Project (serie) | Self - Host |
| 2004 | Happy Birthday Oscar Wilde | Self |
| 2004 | Jerusalemski sindrom | — |
| 2004 | Tell Them Who You Are | Self |
| 2003 | The Commission | Dep. Atty. Gen. Nicholas Katzenbach |
| 2003 | Dos hombres y medio (serie) | Harvey |
| 2003 | The Ellen DeGeneres Show (serie) | Self |
| 2003 | Milost mora | Frederik |
| 2003 | Absence of Malick | Self |
| 2002 | Atrápame si puedes | Roger Strong |
| 2002 | Straight Up: Helicopters in Action | Narrator (voice) |
| 2001 | Laberinto envenenado | Coach Duke Goulding |
| 1999 | The Twelve Apostles | Narrator (voice) |
| 1999 | A Stranger in the Kingdom | Sigurd Moulton |
| 1999 | Máxima tensión | Grifasi |
| 1999 | Nunca te olvides de mi | Jack |
| 1999 | D.R.E.A.M. Team | J.W. Garrison |
| 1999 | El ala oeste de la Casa Blanca (serie) | President Josiah Bartlet |
| 1999 | Tormenta | General James Roberts |
| 1999 | Sin código de conducta | Bill Peterson |
| 1999 | Gunfighter | The Stranger |
| 1999 | The Darklings | Ira Everett |
| 1999 | Desafío Total 2070 (serie) | — |
| 1999 | Un funeral en Texas | Grandpa Sparta |
| 1998 | Babylon 5 - El río de las almas | Soul Hunter |
| 1998 | Asalta como puedas | Guard |
| 1998 | A Letter from Death Row | Michael's Father |
| 1998 | Shadrach | Narrator (voice) |
| 1998 | LateLine (serie) | — |
| 1998 | Voyage of Terror | Henry Northcutt |
| 1997 | El hijo de medusa | President |
| 1997 | Aguas turbulentas | Aurora Skipper |
| 1997 | The View (serie) | Self |
| 1997 | Spawn | Jason Wynn |
| 1997 | The Making of 'Spawn' | Self |
| 1997 | Últimas consecuencias | Sir |
| 1997 | Spawn The Director's Cut | Jason Wynn |
| 1997 | An Act of Conscience | Narrator |
| 1997 | Gun (serie) | Van Guinness |
| 1997 | Titanic: Anatomy of a Disaster | Narrator |
| 1996 | Guerra en casa | Bob Collier |
| 1996 | Spin City (serie) | Ray Harris / Ray Crawford |
| 1996 | E! True Hollywood Story (serie) | — |
| 1996 | Sacred Cargo | Father Andrew Kanvesky |
| 1996 | The Rosie O'Donnell Show (serie) | Invitado especial |
| 1996 | Mexico | Narrator (voice) |
| 1996 | Proyecto Alf | Colonel Gilbert Milfoil |
| 1995 | El presidente y Miss Wade | A.J. MacInerney |
| 1995 | Captain Nuke and the Bomber Boys | Jeff Snyder |
| 1995 | Gospa. El milagro de Medjugorje | Father Jozo Zovko |
| 1995 | Nacidos para la libertad | Dan Walker |
| 1995 | Dillinger and Capone | John Dillinger |
| 1995 | The Sixth Sun: Mayan Uprising in Chiapas | Voice of Marcos |
| 1994 | Bah, Humbug!: The Story of Charles Dickens' 'A Christmas Carol' | Narrator |
| 1994 | Miserias de guerra | Francis Labeck |
| 1994 | Guns of Honor | Jackson Baines Hardin (Ole Devil) |
| 1994 | Boca | Jesse James Montgomery |
| 1994 | Inside the Actors Studio (serie) | Self |
| 1994 | El misterio de Roswell | Townsend |
| 1994 | Trigger Fast | Jackson Baines Hardin / Ole Devil |
| 1994 | One of Her Own | Asst. Dist. Atty. Pete Maresca |
| 1994 | La séptima sombra | Captain Swaggert |
| 1994 | National Geographic: Last Voyage of the Lusitania | Narrator |
| 1994 | Eyewitness: Dinosaur | Narrator |
| 1993 | Alive: 20 Years Later | Narrator (voice) |
| 1993 | A Matter of Justice (serie) | — |
| 1993 | Gettysburg | Gen. Robert E. Lee |
| 1993 | Late Night with Conan O'Brien (serie) | Invitado especial |
| 1993 | The Last P.O.W.? The Bobby Garwood Story | William F.(Ike) Eisenbraun |
| 1993 | Sombras en el silencio | Lt. Brock |
| 1993 | Grey Knight | Gen. Haworth |
| 1993 | Alex Haley's Queen (serie) | James Jackson Sr. |
| 1992 | The Tonight Show with Jay Leno (serie) | — |
| 1992 | Original Intent | Homeless Joe |
| 1991 | Guilty Until Proven Innocent | Harold Hohne |
| 1991 | Canguro último modelo | Anthony Wayne |
| 1991 | Touch and Die | Frank Magenta |
| 1990 | Cadence, el valor del honor | MSgt. Otis V. McKinney |
| 1990 | El Capitán Planeta y los Planetarios (serie) | Sly Sludge (voice) |
| 1990 | Golpe frío | John Hyde |
| 1989 | Los Simpson (serie) | Real Seymour Skinner (voice) |
| 1989 | Another Time, Another Place | Richard Conley |
| 1989 | Beverly Hills Brats | Dr. Jeffrey Miller |
| 1989 | Historias de la cripta (serie) | Kraygen / Thomas Miller / Zorbin the Magnificent |
| 1989 | Mas allá de las estrellas | Paul Andrews |
| 1989 | Nightbreaker | Dr. Alexander Brown - Present |
| 1988 | Juicio en Berlin | Herbert J. Stern |
| 1988 | Da | Charlie |
| 1988 | Walking After Midnight | Self |
| 1988 | Promises to Keep | Self |
| 1987 | The China Odyssey: Empire of the Sun | Narrator |
| 1987 | Wall Street | Carl Fox |
| 1987 | Relación fatal | Del |
| 1987 | Los creyentes | Cal Jamison |
| 1987 | Conspiracy: The Trial of the Chicago 8 | James Marion Hunt |
| 1986 | A State of Emergency | Alex Carmody |
| 1986 | Los secretos del Titanic | Self - Narrator |
| 1986 | Samaritan: The Mitch Snyder Story | Mitch Snyder |
| 1986 | News at Eleven | Frank Kenley |
| 1986 | Shattered Spirits | Lyle Mollencamp |
| 1985 | Out of the Darkness | Eddie Zigo |
| 1985 | Alfred Hitchcock presenta (serie) | Paul Dano |
| 1985 | Spaceflight (serie) | — |
| 1985 | El cuarto Rey Mago | Artaban |
| 1985 | The Atlanta Child Murders (serie) | Chet Dettlinger |
| 1985 | Consenting Adult | Ken Lynd |
| 1984 | Ojos de fuego | Captain Hollister |
| 1983 | Kennedy (serie) | John F. Kennedy |
| 1983 | La zona muerta | Greg Stillson |
| 1983 | Un hombre, una mujer, un hijo | Robert Beckwith |
| 1983 | In the King of Prussia | Judge Samuel Salus II |
| 1983 | Mr. Attenborough and Mr. Gandhi | Self |
| 1982 | Cuando fuimos campeones | Tom Daley |
| 1982 | Nature (serie) | Narrator (voice) |
| 1982 | In the Custody of Strangers | Frank Caldwell |
| 1981 | Golpe maestro | Stephen Booker |
| 1980 | El final de la cuenta atrás | Warren Lasky |
| 1979 | Yo, gran cazador | Pike |
| 1979 | Blind Ambition (serie) | John Dean |
| 1979 | Apocalypse Now | Captain Benjamin Willard |
| 1976 | La muchacha del sendero | Frank Hallet |
| 1976 | El puente de Cassandra | Robby Navarro |
| 1975 | Saturday Night Live (serie) | Self - Host |
| 1975 | Dulce secuestro | Leonard Hatch |
| 1975 | The Last Survivors | Alexander William Holmes |
| 1974 | The Missiles of October | Attorney General Robert F. Kennedy |
| 1974 | The Legend of Earl Durand | Luther Sykes |
| 1974 | The California Kid | Michael McCord |
| 1974 | Los misiles de octubre (serie) | Atty. Gen. Robert F. Kennedy |
| 1974 | The Story of Pretty Boy Floyd | Charles Arthur 'Pretty Boy' Floyd |
| 1974 | La ejecución del soldado Slovik | Eddie Slovik |
| 1974 | Malas tierras | Kit Carruthers |
| 1973 | Message to My Daughter | John Thatcher |
| 1973 | Católicos | Father Kinsella |
| 1973 | Such Dust as Dreams Are Made On | Harlan Garrison |
| 1973 | Tres cartas de amor | Vincent |
| 1973 | A Prowler in the Heart | Tony Parrish |
| 1973 | Crime Club | Deputy Wilson |
| 1972 | Rage | Maj. Holliford |
| 1972 | That Certain Summer | Gary McCain |
| 1972 | When the Line Goes Through | — |
| 1972 | Las calles de San Francisco (serie) | — |
| 1972 | Ghost Story (serie) | Frank |
| 1972 | The Rookies (serie) | — |
| 1972 | Pickup on 101 | Lester Baumgartner |
| 1972 | No Drums, No Bugles | Ashby Gatrell |
| 1972 | Welcome Home, Johnny Bristol | Graytak |
| 1971 | Mongo's Back in Town | Gordon |
| 1971 | Goodbye, Raggedy Ann | Jules Worthman |
| 1971 | Sarge (serie) | Dan |
| 1971 | Colombo (serie) | Karl Lessing |
| 1971 | Cannon (serie) | — |
| 1970 | Dan August (serie) | Norman Sayles |
| 1970 | The Young Lawyers (serie) | Reverend Jimmy Haines |
| 1970 | The Andersonville Trial | Captain Williams |
| 1969 | Love, American Style (serie) | Dr. Art Parmel |
| 1969 | Medical Center (serie) | Glen |
| 1969 | Then Came Bronson | Nick Oresko |
| 1968 | Una historia de tres extraños | Timmy Cleary |
| 1968 | Lancer (serie) | — |
| 1968 | Patrulla juvenil (serie) | Danny Morgan |
| 1968 | Hawaii 5-0 (serie) | Eddie Calhao |
| 1968 | Pat Neal Is Back | Self |
| 1967 | Mannix (serie) | — |
| 1967 | Ironside (serie) | Johnny |
| 1967 | The Price of a Life | Edward Miles Layton |
| 1966 | Misión: imposible (serie) | Lieutenant Albert Brocke |
| 1966 | Hawk (serie) | Peter Janus |
| 1965 | The F.B.I. (serie) | Steve Chandler |
| 1964 | Flipper (serie) | Phil Adams |
| 1963 | Más allá del límite (serie) | Pvt. Arthur Dix |
| 1963 | Arrest and Trial (serie) | — |
| 1962 | The Nurses (serie) | Saunders |
| 1961 | Los defensores (serie) | Joey Americus |
| 1960 | Route 66 (serie) | — |
| 1960 | Insight (serie) | Jamie Conklin |
| 1960 | Police Surgeon (serie) | Ben Grover |
| 1958 | Naked City (serie) | Counterman |
| 1956 | The Edge of Night (serie) | Roy Sanders |
| 1951 | Hallmark Hall of Fame (serie) | Taxi Driver |
| 1944 | Premios Globo de Oro (serie) | Self - Winner |
