| — | Vigilante: Georgia’s Vote Suppression Hitman | Presentator |
| — | Lost & Found in Cleveland | Dr. Austin Raybourne |
| 2023 | Robert De Niro, l'arme du silence | Self (archive footage) |
| 2023 | Downwind | Self Narrator |
| 2022 | Spider-Man: All Roads Lead to No Way Home | Self (archive footage) |
| 2022 | The Jennifer Hudson Show | |
| 2021 | Yehuda ve Siyah Mesih | J. Edgar Hoover |
| 2021 | Futbolun Çocukları | Doc Hall |
| 2021 | Benedict Arnold: Hero Betrayed | Narrator |
| 2020 | A West Wing Special to Benefit When We All Vote | President Josiah Bartlet |
| 2020 | Sokağın Prensesi | John Austin |
| 2020 | Can Art Stop a Bullet: William Kelly's Big Picture | Self |
| 2020 | The Berrigans: Devout and Dangerous | Himself |
| 2019 | The Devil Has a Name | Ralph |
| 2019 | Bench | |
| 2018 | Come Sunday | Oral Roberts |
| 2018 | The Boxcar Children: Surprise Island | James Alden (voice) |
| 2018 | American Dynasties: The Kennedys | Narrator (voice) |
| 2017 | Anne of Green Gables: The Good Stars | Matthew Cuthbert |
| 2017 | Anne of Green Gables: Fire & Dew | Matthew Cuthbert |
| 2017 | Is O.J. Innocent? The Missing Evidence | Narrator (voice) |
| 2017 | Citizen Clark... A Life of Principle | Narrator |
| 2017 | Dreamland: Mark Twain's Journey to Jerusalem | Narrator |
| 2016 | Popstar: Asla Durma Durdurma | Martin Sheen |
| 2016 | Ezber Bozan | Noah Dietrich |
| 2016 | Yeşilin Kızı Anne | Matthew Cuthbert |
| 2016 | The Vessel | Father Douglas |
| 2016 | Back to the Lane | |
| 2015 | Grace ve Frankie | Robert Hanson |
| 2015 | Badge of Honor | Captain Daniel Richards |
| 2015 | Unity | Narrator (voice) |
| 2015 | Robert Bly: A Thousand Years of Joy | Himself |
| 2014 | İnanılmaz Örümcek-Adam 2 | Uncle Ben (uncredited) |
| 2014 | Özgürlük Yürüyüşü | Frank Minis Johnson (uncredited) |
| 2014 | Last Week Tonight with John Oliver | Self |
| 2014 | Umut Kırıntıları | Padre Juilliard |
| 2014 | Ask Me Anything | |
| 2014 | Bhopal: Yağmur için dua | Warren Anderson |
| 2014 | The Boxcar Children | Grandfather Alden (voice) |
| 2014 | Marlon Brando, un acteur nommé désir | Self - Actor (archive footage) |
| 2014 | Holbrook/Twain: An American Odyssey | Himself |
| 2013 | Salinger | Self - Actor |
| 2013 | Amazon | |
| 2013 | The Whale | Tom Nickerson |
| 2013 | Tales from the Warner Bros. Lot | Self |
| 2013 | Jerzy Popieluszko: Messenger of the Truth | Narrator (voice) |
| 2013 | Making 'Badlands' | Self |
| 2013 | The Making of the Wonderful Wizard of Oz | Narrator |
| 2012 | İnanılmaz Örümcek-Adam | Uncle Ben |
| 2012 | İlk ve Son Aşkım | Frank Petersen |
| 2012 | Anger Management | Martin Goodson |
| 2012 | Anger Management | Martin |
| 2012 | Rite of Passage: The Amazing Spider-Man Reborn | Himself |
| 2012 | Stella Days | Fr. Daniel Barry |
| 2012 | Death By China | Narrator |
| 2012 | Brothers on the Line | Narrator |
| 2012 | 8 | Theodore Olson |
| 2011 | İkili Oyun | Tom Highland |
| 2011 | Kırışıklar | (voice) |
| 2011 | Curiosity | Himself - Narrator |
| 2011 | Miller's Tale | Self |
| 2011 | 9/11 Truth: Hollywood Speaks Up | Himself |
| 2011 | Sharkwise | Narrator |
| 2011 | Holy Man: The USA vs. Douglas White | Narrator |
| 2010 | Yol | Tom |
| 2010 | Never Sleep Again: The Elm Street Legacy | Self (archive footage) |
| 2010 | Who Do You Think You Are? | Self |
| 2010 | The Kennedy Detail | Narrator |
| 2010 | A Conversation with Martin Sheen | Self |
| 2009 | Aşk Olur | Donald, Burke's Father-in-Law |
| 2009 | Hayal Et | Dante D'Enzo |
| 2009 | Adım Adım Komplo | Raymond Burke |
| 2009 | Gloves of Stone | Dr. Frank Irwin |
| 2009 | White House Revealed | Self- Narrator (voice) |
| 2009 | Franz Jagerstätter: A Man of Conscience | Franz Jagerstätter (voice) |
| 2009 | Söndagsparty med Filip & Fredrik | |
| 2008 | The Garden | Self |
| 2008 | The End of Poverty? | narrator |
| 2008 | Notes on an American Film Director at Work | Self |
| 2008 | Vietnam: American Holocaust | Voice |
| 2008 | Pirate for the Sea | Himself |
| 2008 | They Killed Sister Dorothy | Narrator |
| 2008 | Dean and Me: Roadshow of an American Primary | Self |
| 2008 | Man in the Mirror | Fallen Soldier / JC Super Star / Man in Black |
| 2007 | Sınır Ötesi | George Morgan |
| 2007 | The Graham Norton Show | Self |
| 2007 | Talk to Me | E.G. Sonderling |
| 2007 | Flatland | Arthur Square (voice) |
| 2007 | Confessions Of An Innocent Man | Himself - Narrator |
| 2007 | Andrew Jackson: Good, Evil & The Presidency | Narrator |
| 2007 | Eyewitness DVD: Weather | Narrator |
| 2006 | Köstebek | Queenan |
| 2006 | Bobby | Jack Stevens |
| 2006 | Who Killed the Electric Car? | Narrator (voice) |
| 2006 | Studio 60 on the Sunset Strip | Radio Host |
| 2006 | The One Show | Self |
| 2006 | 50 Films to See Before You Die | Self |
| 2006 | The Politics of the Dead Zone | Self |
| 2006 | 10 Days That Unexpectedly Changed America | |
| 2006 | America's Game: The Super Bowl Champions | Narrator (voice) |
| 2005 | The Colbert Report | |
| 2005 | James Dean: Forever Young | Narrator (voice) |
| 2004 | The Nomi Song | Self (archive footage) |
| 2004 | Tell Them Who You Are | Self |
| 2004 | Jerusalemski sindrom | |
| 2004 | Happy Birthday Oscar Wilde | Self |
| 2003 | Two and a Half Men | Harvey |
| 2003 | The Ellen DeGeneres Show | Self |
| 2003 | Milost mora | Frederik |
| 2003 | The Perilous Fight: America's World War II in Color | Narrator |
| 2003 | Absence of Malick | Self |
| 2003 | The Commission | Dep. Atty. Gen. Nicholas Katzenbach |
| 2003 | Celebrity Poker Showdown | Self |
| 2002 | Sıkıysa Yakala | Roger Strong |
| 2002 | Rosy-Fingered Dawn: A Film on Terrence Malick | Self |
| 2002 | Straight Up: Helicopters in Action | Narrator (voice) |
| 2002 | Bringing Down a Dictator | Narrator (voice) |
| 2001 | O | Coach Duke Goulding |
| 2001 | National Geographic: Inside the Vatican | Narrator |
| 2001 | Enemies of War | Narrator |
| 2001 | Stockpile: The New Nuclear Menace | Narrator |
| 2000 | On Great White Wings: The Wright Brothers and the Race for Flight | Narrator |
| 1999 | The West Wing | President Josiah Bartlet |
| 1999 | Lost & Found | Millstone |
| 1999 | The Time Shifters | Grifasi |
| 1999 | No Code of Conduct | Bill Peterson |
| 1999 | Total Recall 2070 | |
| 1999 | Storm | General James Roberts |
| 1999 | A Texas Funeral | Grandpa Sparta |
| 1999 | Forget Me Never | Jack |
| 1999 | In Dreams: The Roy Orbison Story | Self |
| 1999 | Gunfighter | The Stranger |
| 1999 | D.R.E.A.M. Team | J.W. Garrison |
| 1999 | A Stranger in the Kingdom | Sigurd Moulton |
| 1999 | The Twelve Apostles | Narrator (voice) |
| 1999 | The Darklings | Ira Everett |
| 1999 | Chicken Soup for the Soul | |
| 1999 | Ninth Street | Father Frank |
| 1998 | Babylon 5: The River of Souls | Soul Hunter |
| 1998 | Free Money | Guard |
| 1998 | Monument Ave. | Hanlon |
| 1998 | Shadrach | Narrator (voice) |
| 1998 | Voyage of Terror | Henry Northcutt |
| 1998 | Elektrikli Sandalyeden Mektup | Michael's Father |
| 1998 | Holes in Heaven | Narrator (voice) |
| 1998 | The Elevator | Sarge |
| 1998 | LateLine | |
| 1997 | Spawn | Jason Wynn |
| 1997 | The View | Self |
| 1997 | The View | Self - Guest |
| 1997 | Truth or Consequences, N.M. | Sir |
| 1997 | Hostile Waters | Aurora Skipper |
| 1997 | Medusa's Child | President |
| 1997 | The Making of 'Spawn' | Himself |
| 1997 | Gun | Van Guinness |
| 1997 | Titanic: Anatomy of a Disaster | Narrator |
| 1997 | An Act of Conscience | Narrator |
| 1996 | Spin City | Ray Harris / Ray Crawford |
| 1996 | Project: ALF | Colonel Gilbert Milfoil |
| 1996 | E! True Hollywood Story | |
| 1996 | The War at Home | Bob Collier |
| 1996 | The Rosie O'Donnell Show | Self - Guest |
| 1996 | Mexico | Narrator (voice) |
| 1996 | Entertaining Angels: The Dorothy Day Story | Peter Maurin |
| 1996 | Sacred Cargo | Father Andrew Kanvesky |
| 1996 | Blacklist: Hollywood on Trial | Dalton Trumbo |
| 1995 | Amerikan Başkanı | A.J. MacInerney |
| 1995 | Dead Presidents | The Judge |
| 1995 | 101 Gece | Mute Actor in Hollywood (uncredited) |
| 1995 | Dillinger and Capone | John Dillinger |
| 1995 | Gospa | Father Jozo Zovko |
| 1995 | Born Wild | Dan Walker |
| 1995 | The Break | Gil Robbins |
| 1995 | Captain Nuke and the Bomber Boys | Jeff Snyder |
| 1995 | The Sixth Sun: Mayan Uprising in Chiapas | Voice of Marcos |
| 1994 | Roswell | Townsend |
| 1994 | Inside the Actors Studio | Self |
| 1994 | When the Bough Breaks | Captain Swaggert |
| 1994 | Boca | Jesse James Montgomery |
| 1994 | Fortunes of War | Francis Labeck |
| 1994 | Guns of Honor | Jackson Baines Hardin (Ole Devil) |
| 1994 | Trigger Fast | Jackson Baines Hardin / Ole Devil |
| 1994 | One of Her Own | Asst. Dist. Atty. Pete Maresca |
| 1994 | Hits! | Kelly |
| 1994 | Marlon Brando: The Wild One | Self |
| 1994 | Eyewitness: Dinosaur | Narrator |
| 1994 | Eyewitness | Narrator |
| 1994 | National Geographic: Last Voyage of the Lusitania | Narrator |
| 1994 | Bah, Humbug!: The Story of Charles Dickens' 'A Christmas Carol' | Narrator |
| 1993 | Sıkı Atışlar 2 | Capt. Benjamin L. Willard (uncredited) |
| 1993 | Gettysburg | Gen. Robert E. Lee |
| 1993 | Late Night with Conan O'Brien | Self - Guest |
| 1993 | Hear No Evil | Lt. Brock |
| 1993 | Alex Haley's Queen | James Jackson Sr. |
| 1993 | Grey Knight | Gen. Haworth |
| 1993 | Hearts of Hot Shots! Part Deux—A Filmmaker's Apology | |
| 1993 | The Last P.O.W.? The Bobby Garwood Story | William F.(Ike) Eisenbraun |
| 1993 | Alive: 20 Years Later | Narrator (voice) |
| 1993 | Braving Alaska | Narrator |
| 1993 | Braving Alaska | Narrator (voice) |
| 1993 | A Matter of Justice | |
| 1992 | The Tonight Show with Jay Leno | |
| 1992 | The Water Engine | Chain Letter Voice (voice) (uncredited) |
| 1992 | Original Intent | Homeless Joe |
| 1991 | JFK: Kapanmayan Dosya | Narrator (voice) (uncredited) |
| 1991 | Karanlığın Yüreği: Bir Yapımcının Kıyameti | Self |
| 1991 | The Maid | Anthony Wayne |
| 1991 | Touch and Die | Frank Magenta |
| 1991 | Guilty Until Proven Innocent | Harold Hohne |
| 1991 | The Rites Of Mu | Narrator |
| 1990 | Captain Planet and the Planeteers | Sly Sludge (voice) |
| 1990 | Cadence | MSgt. Otis V. McKinney |
| 1990 | Cold Front | John Hyde |
| 1989 | Simpsonlar | Real Seymour Skinner (voice) |
| 1989 | Korku Mahzeni | Kraygen / Thomas Miller / Zorbin the Magnificent |
| 1989 | Beyond the Stars | Paul Andrews |
| 1989 | Beverly Hills Brats | Dr. Jeffrey Miller |
| 1989 | Nightbreaker | Dr. Alexander Brown - Present |
| 1989 | Marked for Murder | Man in Park |
| 1989 | Another Time, Another Place | Richard Conley |
| 1988 | Judgment in Berlin | Herbert J. Stern |
| 1988 | Da | Charlie |
| 1988 | Promises to Keep | Himself |
| 1988 | Walking After Midnight | Self |
| 1987 | Borsa | Carl Fox |
| 1987 | The Believers | Cal Jamison |
| 1987 | Siesta | Del |
| 1987 | Dear America: Letters Home from Vietnam | Alan (voice) |
| 1987 | The China Odyssey: Empire of the Sun | Narrator |
| 1987 | Conspiracy: The Trial of the Chicago 8 | James Marion Hunt |
| 1986 | Secrets of the Titanic | Himself (Narrator) |
| 1986 | Shattered Spirits | Lyle Mollencamp |
| 1986 | A State of Emergency | Alex Carmody |
| 1986 | News at Eleven | Frank Kenley |
| 1986 | Samaritan: The Mitch Snyder Story | Mitch Snyder |
| 1985 | The New Alfred Hitchcock Presents | Paul Dano |
| 1985 | The Fourth Wise Man | Artaban |
| 1985 | The Atlanta Child Murders | Chet Dettlinger |
| 1985 | Consenting Adult | Ken Lynd |
| 1985 | Broken Rainbow | Narrator (voice) |
| 1985 | Out of the Darkness | Eddie Zigo |
| 1985 | In the Name of the People | Narrator |
| 1985 | Native Sons: Palestinians In Exile | Narrator |
| 1985 | The Real Thing | Narrator (voice) |
| 1985 | Spaceflight | |
| 1984 | Tepki | Captain Hollister |
| 1984 | The Guardian | Charlie Hyatt |
| 1983 | Ölüm Bölgesi | Greg Stillson |
| 1983 | Kennedy | John F. Kennedy |
| 1983 | Man, Woman and Child | Robert Beckwith |
| 1983 | Choices of the Heart | Father Philan |
| 1983 | In the King of Prussia | Judge Samuel Salus II |
| 1983 | Mr. Attenborough and Mr. Gandhi | Self |
| 1982 | Gandhi | Vince Walker |
| 1982 | Enigma | Alex Holbeck |
| 1982 | Nature | Narrator (voice) |
| 1982 | In the Custody of Strangers | Frank Caldwell |
| 1982 | That Championship Season | Tom Daley |
| 1982 | Centralia Fire | Narrator |
| 1982 | I Love Liberty | Self |
| 1981 | Loophole | Stephen Booker |
| 1980 | Beklenmeyen Baskın | Warren Lasky |
| 1979 | Kıyamet | Captain Benjamin Willard |
| 1979 | Eagle's Wing | Pike |
| 1979 | Blind Ambition | John Dean |
| 1978 | Taxi!! | Taxi Driver |
| 1977 | Rolling Stone Magazine: The 10th Anniversary | Self |
| 1976 | Yolun Sonundaki Küçük Kız | Frank Hallet |
| 1976 | The Cassandra Crossing | Robby Navarro |
| 1975 | Saturday Night Live | Self - Cameo (uncredited) |
| 1975 | Saturday Night Live | Self - Host |
| 1975 | Sweet Hostage | Leonard Hatch |
| 1975 | The Last Survivors | Alexander William Holmes |
| 1974 | Kanlı Toprak | Kit Carruthers |
| 1974 | The California Kid | Michael McCord |
| 1974 | The Execution of Private Slovik | Eddie Slovik |
| 1974 | The Missiles of October | Attorney General Robert F. Kennedy |
| 1974 | The Missiles of October | Atty. Gen. Robert F. Kennedy |
| 1974 | The Story of Pretty Boy Floyd | Charles Arthur 'Pretty Boy' Floyd |
| 1974 | The Legend of Earl Durand | Luther Sykes |
| 1973 | The Catholics | Father Kinsella |
| 1973 | Toma | |
| 1973 | Message to My Daughter | John Thatcher |
| 1973 | Letters from Three Lovers | Vincent |
| 1973 | Love Story (US) | Frank Randolph |
| 1973 | Such Dust as Dreams Are Made On | Harlan Garrison |
| 1973 | Crime Club | Deputy Wilson |
| 1973 | A Prowler in the Heart | Tony Parrish |
| 1972 | The Streets of San Francisco | |
| 1972 | Rage | Maj. Holliford |
| 1972 | The Rookies | |
| 1972 | Pursuit | Timothy Drew |
| 1972 | That Certain Summer | Gary McCain |
| 1972 | Ghost Story | Frank |
| 1972 | Pickup on 101 | Lester Baumgartner |
| 1972 | Welcome Home, Johnny Bristol | Graytak |
| 1972 | When the Line Goes Through | |
| 1972 | No Drums, No Bugles | Ashby Gatrell |
| 1971 | Columbo | Karl Lessing |
| 1971 | Cannon | |
| 1971 | Mongo's Back in Town | Gordon |
| 1971 | Sarge | Dan |
| 1971 | Goodbye, Raggedy Ann | Jules Worthman |
| 1971 | Montserrat | |
| 1970 | Catch-22 | 1st Lt. Dobbs |
| 1970 | The Andersonville Trial | Captain Williams |
| 1970 | Matt Lincoln | Charles |
| 1970 | The Young Lawyers | Reverend Jimmy Haines |
| 1969 | Medical Center | |
| 1969 | Then Came Bronson | Nick Oresko |
| 1968 | Hawaii Five-O | Eddie Calhao |
| 1968 | Hawaii Five-O | Arthur Dixon |
| 1968 | The Mod Squad | Danny Morgan |
| 1968 | The Subject Was Roses | Timmy Cleary |
| 1968 | Lancer | |
| 1968 | Pat Neal Is Back | Himself |
| 1967 | The Incident | Artie Connors |
| 1967 | Ironside | Johnny |
| 1967 | Mannix | |
| 1967 | N.Y.P.D. | Fred Janney |
| 1967 | The Price of a Life | Edward Miles Layton |
| 1966 | Mission: Impossible | Lieutenant Albert Brocke |
| 1966 | Ten Blocks on the Camino Real | Kilroy |
| 1966 | Hawk | Peter Janus |
| 1965 | The F.B.I. | Norman Gretzler |
| 1965 | The F.B.I. | Perry Victor |
| 1965 | The F.B.I. | Steve Chandler |
| 1965 | The F.B.I. | Neil Harland |
| 1965 | For the People | Louis Cahane |
| 1964 | Flipper | Phil Adams |
| 1963 | The Outer Limits | Pvt. Arthur Dix |
| 1963 | Arrest and Trial | |
| 1962 | The Nurses | Saunders |
| 1962 | The Nurses | Carl |
| 1961 | The Defenders | Arnold McCabe |
| 1961 | The Defenders | Dino Locatelli |
| 1961 | The Defenders | Joey Americus |
| 1961 | The Defenders | Adam Novins |
| 1960 | Route 66 | |
| 1960 | Insight | Vincent |
| 1960 | Insight | God |
| 1960 | Insight | Jamie Conklin |
| 1960 | Insight | Akardin |
| 1960 | Insight | Bobo |
| 1960 | Police Surgeon | Ben Grover |
| 1958 | Naked City | Phillip Kosnik |
| 1958 | Naked City | Nick (uncredited) |
| 1958 | Naked City | Counterman |
| 1956 | The Edge of Night | Roy Sanders |
| 1951 | Hallmark Hall of Fame | Taxi Driver |
