Film | Rôle | Année |
|---|
| Apocalypse Now | Captain Benjamin Willard | 1979 |
| La Mort au bout des doigts | Frank Magenta | 1991 |
| Les Infiltrés | Queenan | 2006 |
| Arrête-moi si tu peux | Roger Strong | 2002 |
| Péril en mer | Aurora Skipper | 1997 |
| Hearts of Hot Shots! Part Deux—A Filmmaker's Apology | | 1993 |
| Gandhi | Vince Walker | 1982 |
| Onde de choc | Bill Peterson | 1999 |
| La Balade sauvage | Kit Carruthers | 1973 |
| Spawn | Jason Wynn | 1997 |
| Gettysburg | Gen. Robert E. Lee | 1993 |
| Wall Street | Carl Fox | 1987 |
| Bobby | Jack Stevens | 2006 |
| Aux cœurs des ténèbres : L'Apocalypse d'un metteur en scène | Self | 1991 |
| Enigma | Alex Holbeck | 1982 |
| Babylon 5 : La Rivière des âmes | Soul Hunter | 1998 |
| Les Oubliées de Juarez | George Morgan | 2007 |
| Othello 2003 | Coach Duke Goulding | 2001 |
| Dead Zone | Greg Stillson | 1983 |
| Sweet Hostage | Leonard Hatch | 1975 |
| La Dernière Cavale | Sir | 1997 |
| Argent gratuit | Guard | 1998 |
| Talk to Me | E.G. Sonderling | 2007 |
| Samaritan: The Mitch Snyder Story | Mitch Snyder | 1986 |
| Charlie | Captain Hollister | 1984 |
| Benedict Arnold: Hero Betrayed | Narrator | 2021 |
| Le Pont de Cassandra | Robby Navarro | 1976 |
| Nimitz, retour vers l'enfer | Warren Lasky | 1980 |
| Les envoûtés | Cal Jamison | 1987 |
| Happy Birthday Oscar Wilde | Self | 2004 |
| Coup de foudre à Seattle | Burke's Father-in-Law | 2009 |
| Stockpile: The New Nuclear Menace | Narrator | 2001 |
| Le président et Miss Wade | A.J. MacInerney | 1995 |
| A Conversation with Martin Sheen | Self | 2010 |
| Tell Them Who You Are | Self | 2004 |
| Qui a tué la voiture électrique ? | Self - Narrator (voice) | 2006 |
| Cadence | MSgt. Otis V. McKinney | 1990 |
| Pickup on 101 | Lester Baumgartner | 1972 |
| I Love Liberty | Self | 1982 |
| Siesta | Del | 1987 |
| Roswell, le mystère | Townsend | 1994 |
| Catholics | Father Kinsella | 1973 |
| Mexico | Narrator (voice) | 1996 |
| In Dreams: The Roy Orbison Story | Self | 1999 |
| IMAX - Straight Up, Helicopters in Action | Narrator (voice) | 2002 |
| 50 Films to See Before You Die | Self | 2006 |
| Le Couloir de La Mort | Michael's Father | 1998 |
| Twister 2 - Extreme tornade | General James Roberts | 1999 |
| Gloves of Stone | Dr. Frank Irwin | 2009 |
| Conspiration | Raymond Burke | 2009 |
| L'incident | Artie Connors | 1967 |
| Une Fille qui a du chien | Millstone | 1999 |
| National Geographic : Les secrets du Titanic | Self - Narrator | 1986 |
| Man in the Mirror | Fallen Soldier / JC Super Star / Man in Black | 2008 |
| A Texas Funeral | Grandpa Sparta | 1999 |
| Grey Knight | Gen. Haworth | 1993 |
| Confessions Of An Innocent Man | Self - Narrator | 2007 |
| Jugement à Berlin | Herbert J. Stern | 1988 |
| La fin de la pauvreté? | Self - Narrator | 2008 |
| La Petite Fille au bout du chemin | Frank Hallet | 1976 |
| The Fourth Wise Man | Artaban | 1985 |
| Dans ses rêves ! | Dante D'Enzo | 2009 |
| Poursuite | Timothy Drew | 1972 |
| The California Kid | Michael McCord | 1974 |
| Hear No Evil | Lt. Brock | 1993 |
| The Story of Pretty Boy Floyd | Charles Arthur 'Pretty Boy' Floyd | 1974 |
| Born Wild | Dan Walker | 1995 |
| Shadrach | Narrator (voice) | 1998 |
| Secret Identity | Tom Highland | 2011 |
| Dillinger et Capone | John Dillinger | 1995 |
| Au-dela des etoiles | Paul Andrews | 1989 |
| No Drums, No Bugles | Ashby Gatrell | 1972 |
| The Way : La Route Ensemble | Tom | 2010 |
| The Sixth Sun: Mayan Uprising in Chiapas | Voice of Marcos | 1995 |
| The Missiles of October | Attorney General Robert F. Kennedy | 1974 |
| Exécuté pour désertion | Eddie Slovik | 1974 |
| Stella Days | Fr. Daniel Barry | 2012 |
| The War at Home | Bob Collier | 1996 |
| Holes in Heaven? H.A.A.R.P. & Advances In Tesla Technology | Narrator (voice) | 1998 |
| Un amour de banquier | Anthony Wayne | 1991 |
| Jusqu'à ce que la fin du monde nous sépare | Frank Petersen | 2012 |
| Rage | Maj. Holliford | 1972 |
| The Amazing Spider-Man : Le Destin d'un héros | Uncle Ben (uncredited) | 2014 |
| James Dean: Forever Young | Narrator (voice) | 2005 |
| Death By China | Narrator | 2012 |
| Loophole | Stephen Booker | 1981 |
| Da | Charlie | 1988 |
| Le profiler | Captain Swaggert | 1994 |
| That Certain Summer | Gary McCain | 1972 |
| Holy Man: The USA vs. Douglas White | Narrator | 2011 |
| Miller's Tale | Self | 2011 |
| L'Étalon de guerre | Pike | 1979 |
| Consenting Adult | Ken Lynd | 1985 |
| Cold Front | John Hyde | 1989 |
| Les vainqueurs | Tom Daley | 1982 |
| Blacklist: Hollywood on Trial | Dalton Trumbo | 1996 |
| Titanic: Anatomy of a Disaster | Narrator | 1997 |
| Downwind | Self Narrator | 2023 |
| The Subject Was Roses | Timmy Cleary | 1968 |
| In the Name of the People | Narrator | 1985 |
| An Act of Conscience | Narrator | 1997 |
| Mongo's Back in Town | Gordon | 1971 |
| Boca | Jesse James Montgomery | 1994 |
| Forget Me Never | Jack | 1999 |
| Un homme, une femme et un enfant | Robert Beckwith | 1983 |
| In the Custody of Strangers | Frank Caldwell | 1982 |
| Favelas | Padre Juilliard | 2014 |
| Objectif nucléaire | Dr. Alexander Brown - Present | 1989 |
| 9/11 Truth: Hollywood Speaks Up | Self | 2011 |
| Then Came Bronson | Nick Oresko | 1969 |
| Captain Nuke and the Bomber Boys | Jeff Snyder | 1995 |
| Rosy-Fingered Dawn: A Film on Terrence Malick | Self | 2002 |
| Trigger Fast | Jackson Baines Hardin / Ole Devil | 1994 |
| D.R.E.A.M. Team | J.W. Garrison | 1999 |
| Franz Jagerstätter: A Man of Conscience | Franz Jagerstätter (voice) | 2009 |
| Letters from Three Lovers | Vincent | 1973 |
| Message to My Daughter | John Thatcher | 1973 |
| Vietnam: American Holocaust | Voice | 2008 |
| Guns of Honor | Jackson Baines Hardin (Ole Devil) | 1994 |
| Out of the Darkness | Eddie Zigo | 1985 |
| Eyewitness: Dinosaur | Narrator (voice) | 1994 |
| The Guardian | Charlie Hyatt | 1984 |
| Tales from the Warner Bros. Lot | Self | 2013 |
| The Whale | Tom Nickerson | 2013 |
| Un etat d'urgence | Alex Carmody | 1986 |
| Gospa | Father Jozo Zovko | 1995 |
| The Amazing Spider-Man | Uncle Ben | 2012 |
| Conspiracy: The Trial of the Chicago 8 | James Marion Hunt | 1987 |
| Fortunes of War | Francis Labeck | 1994 |
| Pirate for the Sea | Self | 2008 |
| Beverly Hills Brats | Dr. Jeffrey Miller | 1989 |
| A Prayer for Rain | Warren Anderson | 2014 |
| The Andersonville Trial | Captain Williams | 1970 |
| In the King of Prussia | Judge Samuel Salus II | 1983 |
| La Pause | Gil Robbins | 1995 |
| Taxi!! | Taxi Driver | 1978 |
| Ten Blocks on the Camino Real | Kilroy | 1966 |
| The Making of the Wonderful Wizard of Oz | Narrator | 2013 |
| A Stranger in the Kingdom | Sigurd Moulton | 1999 |
| Ask me anything | | 2014 |
| Original Intent | Homeless Joe | 1992 |
| Holbrook/Twain: An American Odyssey | Self | 2014 |
| The Last Survivors | Alexander William Holmes | 1975 |
| The Real Thing | Narrator (voice) | 1985 |
| The Kennedy Detail | Narrator | 2010 |
| L'Exception à la règle | Noah Dietrich | 2016 |
| Voyage of Terror | Henry Northcutt | 1998 |
| Bah, Humbug!: The Story of Charles Dickens' 'A Christmas Carol' | Narrator | 1994 |
| Rolling Stone Magazine: The 10th Anniversary | Self | 1977 |
| Lost & Found in Cleveland | Dr. Austin Raybourne | 2025 |
| Enemies of War | Narrator | 2001 |
| Gunfighter | The Stranger | 1999 |
| Brothers on the Line | Narrator | 2012 |
| Walking After Midnight | Self | 1988 |
| Selma | Frank Minis Johnson (uncredited) | 2014 |
| Welcome Home, Johnny Bristol | Graytak | 1972 |
| Badge of Honor | Captain Daniel Richards | 2015 |
| Sharkwise | Narrator | 2011 |
| La revanche d'une femme flic | Asst. Dist. Atty. Pete Maresca | 1994 |
| National Geographic : Les Coulisses du Vatican | Narrator | 2001 |
| Pat Neal Is Back | Self | 1968 |
| The Price of a Life | Edward Miles Layton | 1967 |
| Eyewitness DVD: Weather | Narrator | 2007 |
| Unity | Narrator (voice) | 2015 |
| Entertaining Angels: The Dorothy Day Story | Peter Maurin | 1996 |
| Jerzy Popieluszko: Messenger of the Truth | Narrator (voice) | 2013 |
| Goodbye, Raggedy Ann | Jules Worthman | 1971 |
| News at Eleven | Frank Kenley | 1986 |
| The Last P.O.W.? The Bobby Garwood Story | William F.(Ike) Eisenbraun | 1993 |
| JFK | Narrator (voice) (uncredited) | 1991 |
| Les enfants du wagon | Grandfather Alden (voice) | 2014 |
| Ninth Street | Father Frank | 1999 |
| A Prowler in the Heart | Tony Parrish | 1973 |
| Hits! | Kelly | 1994 |
| The Elevator | Sarge | 1998 |
| Piège en plein ciel | President | 1997 |
| Montserrat | | 1971 |
| Popstar : Célèbre à tout prix | Martin Sheen | 2016 |
| Broken Rainbow | Narrator (voice) | 1985 |
| The Nomi Song | Self (archive footage) | 2004 |
| Anne des Pignons Verts | Matthew Cuthbert | 2016 |
| Catch-22 | 1st Lt. Dobbs | 1970 |
| Le Messager | Father Douglas | 2016 |
| Dreamland: Mark Twain's Journey to Jerusalem | Narrator | 2017 |
| The Water Engine | Chain Letter Voice (voice) (uncredited) | 1992 |
| The Twelve Apostles | Narrator (voice) | 1999 |
| Such Dust as Dreams Are Made On | Harlan Garrison | 1973 |
| Vigilantes INC. - America's New Vote Suppression Hitmen | Presenter | 2024 |
| 8 | Theodore Olson | 2012 |
| Flatland | Arthur Square (voice) | 2007 |
| Opération Alf | Colonel Gilbert Milfoil | 1996 |
| Guilty Until Proven Innocent | Harold Hohne | 1991 |
| They Killed Sister Dorothy | Narrator | 2008 |
| Le dernier des condors | Luther Sykes | 1974 |
| Marked for Murder | Man in Park | 1989 |
| Amazonia | Narrator | 2013 |
| National Geographic: Last Voyage of the Lusitania | Narrator | 1994 |
| Hot Shots ! 2 | Capt. Benjamin L. Willard (uncredited) | 1993 |
| Braving Alaska | Narrator | 1993 |
| Braving Alaska | Narrator (voice) | 1993 |
| Anne, la maison aux pignons verts : sous une bonne étoile | Matthew Cuthbert | 2017 |
| Anne, la maison aux pignons verts : De feu et de rosée | Matthew Cuthbert | 2017 |
| Centralia Fire | Narrator | 1982 |
| Come Sunday | Oral Roberts | 2018 |
| Jerusalemski sindrom | | 2004 |
| Choices of the Heart | Father Philan | 1983 |
| Robert Bly: A Thousand Years of Joy | Self | 2015 |
| The Making of 'Spawn' | Self | 1997 |
| The Boxcar Children: Surprise Island | James Alden (voice) | 2018 |
| Citizen Clark... A Life of Principle | Narrator | 2017 |
| Bringing Down a Dictator | Narrator (voice) | 2002 |
| Milost mora | Frederik | 2003 |
| Back to the Lane | Self | 2016 |
| Promises to Keep | Self | 1988 |
| Crime Club | Deputy Wilson | 1973 |
| Absence of Malick | Self | 2003 |
| Shattered Spirits | Lyle Mollencamp | 1986 |
| Les coulisse de la maison blanche | Self- Narrator (voice) | 2009 |
| On Great White Wings: The Wright Brothers and the Race for Flight | Narrator | 2000 |
| Rite of Passage: The Amazing Spider-Man Reborn | Self | 2012 |
| Les 12 orphelins | Doc Hall | 2021 |
| Contaminations | Ralph | 2019 |
| Making Badlands | Self | 2013 |
| The China Odyssey: Empire of the Sun | Narrator | 1987 |
| Native Sons: Palestinians In Exile | Narrator | 1985 |
| The Darklings | Ira Everett | 1999 |
| Marlon Brando, un acteur nommé désir | Self - Actor (archive footage) | 2014 |
| Marlon Brando: The Wild One | Self | 1994 |
| Alive: 20 Years Later | Narrator (voice) | 1993 |
| Génération sacrifiée | The Judge | 1995 |
| Salinger | Self - Actor | 2013 |
| Notes on an American Film Director at Work | Self | 2008 |
| Princess of the Row | John Austin | 2020 |
| Dear America : Lettres du Vietnam | Alan (voice) | 1987 |
| Andrew Jackson: Good, Evil & The Presidency | Narrator | 2007 |
| Judas and the Black Messiah | J. Edgar Hoover | 2021 |
| Can Art Stop a Bullet: William Kelly's Big Picture | Self | 2020 |
| A West Wing Special to Benefit When We All Vote | Josiah Bartlet | 2020 |
| Les Cent et Une Nuits de Simon Cinéma | Mute Actor in Hollywood (uncredited) | 1995 |
| Chasseurs de frissons | Grifasi | 1999 |
| Sacred Cargo | Father Andrew Kanvesky | 1996 |
| The Commission | Dep. Atty. Gen. Nicholas Katzenbach | 2003 |
| Another Time, Another Place | Richard Conley | 1989 |
| Monument Ave. | Hanlon | 1998 |
| The Rites Of Mu | Narrator | 1991 |
| When the Line Goes Through | Bluff Jackson | 1972 |
| Dean and Me: Roadshow of an American Primary | Self | 2008 |
| Mr. Attenborough and Mr. Gandhi | Self | 1983 |
| The Berrigans: Devout and Dangerous | Self | 2020 |
| The Politics of the Dead Zone | Self | 2006 |
| Croatia: Land of 1,100 Islands & 101 Dalmatians | Narrator (voice) | 1997 |
| Cinema Combat: Hollywood Goes to War | Self - Narrator | 1998 |
| Crossing the Line | self | 1999 |
| Halfway Home | Narrator(voice) | 2011 |
| Eyewitness: Monster | Narrator (voice) | 1997 |
| The Making of Eyewitness | Narrator | 1995 |
| Father G and the Homeboys | Narrator | 2007 |
| Hidden in Plain Sight | Narrator (voice) | 2003 |
| 23 Seconds to Eternity | Narrator | 2023 |
| Defending Gideon | Narrator | 2013 |
| The Little Pageant That Could | Self (archive footage) | 2024 |
| Eyewitness: Shark | Narrator (voice) | 1994 |
| Winning New Hampshire | Self | 2004 |
| No Place to Hide | Narrator | 1983 |
| The One | Jefferson | 2026 |
| Revolution of the Heart: The Dorothy Day Story | Self | 2020 |
| The King and I: Recording a Hollywood Dream | Self / The Kralahome (voice) | 1993 |
| American Martyr: The Stanley Rother Story | Narrator | 2026 |
| KITÁ | Narrator | |
| The Made-for-TV Election | Host | |
| Joe Papp in Five Acts | Self | 2012 |
