Credits

• 2017 · Arthur Miller: Writer as Self (archive footage)
• 2016 · All Governments Lie: Truth, Deception, and the Spirit of I.F. Stone as Ben Bradlee (archive footage)
• 2006 · Metallica: The Videos 1989-2004 as Joe's Father (video "One")
• 2006 · Eugene O’Neill: A Documentary Film as Self
• 2004 · Sam Peckinpah's West: Legacy of a Hollywood Renegade as Self (archive footage)
• 2000 · Going Home as Charles Barton
• 2000 · Once Upon a Time: Sergio Leone as Self (archive footage)
• 2000 · That Moment: Magnolia Diary as Self
• 1999 · Magnolia as Earl Partridge
• 1999 · My Best Fiend as Self (archive footage)
• 1998 · Enemy of the State as Congressman Phillip Hammersley (uncredited)
• 1998 · Beloved as Mr. Bodwin
• 1998 · The Real Macaw as Grandpa Girdis
• 1998 · Heartwood as Logan Reeser
• 1997 · Truman as Narrator (voice)
• 1997 · A Thousand Acres as Larry Cook
• 1996 · T.R.: The Story of Theodore Roosevelt as Narrator
• 1996 · The West as Self - Brigham Young
• 1995 · Journey as Marcus
• 1995 · Crimson Tide as Rear Admiral Anderson (uncredited)
• 1995 · My Antonia as Josea Burden
• 1995 · The Great American West as Narrator (voice)
• 1994 · Baseball as (voice)
• 1994 · The Enemy Within as General R. Pendleton Lloyd
• 1994 · Little Big League as Thomas Heywood
• 1994 · The Paper as Graham Keighley
• 1994 · Over Washington D.C.: Our Nation's Capital as Narrator
• 1993 · La Classe américaine as The Newspaper Director (archive footage)
• 1993 · Philadelphia as Charles Wheeler
• 1993 · Heidi as Grandfather
• 1993 · Heidi as Großvater
• 1993 · Sam Peckinpah: Man of Iron as Self
• 1993 · The Trial as Doctor Huld
• 1993 · The Adventures of Huck Finn as The King
• 1992 · Lincoln as President Abraham Lincoln (voice)
• 1992 · The Peoples Palace: Secrets of the New York Public Library as Self - Narrator (voice)
• 1992 · Storyville as Clifford Fowler
• 1992 · When It Was a Game 2 as Passage Narrator (voice)
• 1992 · Deceptions as Clay (voice)
• 1991 · Mark Twain and Me as Mark Twain
• 1991 · Empire of the Air: The Men Who Made Radio as Narrator (voice)
• 1991 · Rabbit Ears - Jonah and the Whale as Narrator (voice)
• 1991 · When It Was a Game as (voice)
• 1991 · An Inconvenient Woman as Jules Mendelson
• 1991 · Chernobyl: The Final Warning as Dr. Armand Hammer
• 1991 · The Perfect Tribute as President Abraham Lincoln
• 1990 · The Civil War as Ulysses S. Grant
• 1990 · Quick Change as Chief Rotzinger
• 1990 · Night of 100 Stars III as Self
• 1989 · Black Rainbow as Walter Travis
• 1989 · Thomas Hart Benton as Narrator (voice)
• 1989 · Parenthood as Frank Buckman
• 1989 · Reunion as Henry Strauss
• 1989 · Dream a Little Dream as Coleman Ettinger
• 1988 · The Christmas Wife as John Tanner
• 1988 · The Good Mother as W. O. Muth
• 1988 · American Experience as Narrator (voice)
• 1988 · Bright Lights, Big City as Mr. Hardy (uncredited)
• 1988 · Inherit the Wind as Harry Drummond
• 1987 · Breaking Home Ties as Lloyd Wells
• 1987 · Laguna Heat as Wade Shephard
• 1987 · Happy 100th Birthday, Hollywood as Self
• 1987 · Square Dance as Dillard
• 1986 · The Last Frontier as Ed Stenning
• 1986 · Johnny Bull as Stephan Kovacs
• 1986 · Portrait: Werner Herzog as Self (archive footage)
• 1985 · The Long Hot Summer as Will Varner
• 1985 · Empire City as Self - Narrator (voice)
• 1985 · The Atlanta Child Murders as Alvin Binder
• 1985 · Screen Two as Doctor Huld
• 1984 · The World of Tomorrow as Self / Narrator
• 1984 · You Can't Take it With You as Grandpa Martin Vanderhof
• 1984 · America and Lewis Hine as Voice
• 1984 · Sakharov as Andrei Sakharov
• 1983 · The Day After as Dr. Russell Oakes
• 1983 · The Time of Our Lives: The Most Amazing 60 Years in History as Self - Host
• 1983 · Reading Rainbow as Self - Narrator (voice)
• 1983 · Something Wicked This Way Comes as Charles Halloway
• 1983 · Max Dugan Returns as Max Dugan
• 1982 · Burden of Dreams as Fitzcarraldo (archive footage)
• 1982 · Night of 100 Stars as Self
• 1981 · The Legend of the Lone Ranger as President Ulysses S. Grant
• 1980 · Melvin and Howard as Howard Hughes
• 1980 · Ghosts of Cape Horn as Narrator
• 1980 · Raise the Titanic as Admiral James Sandecker
• 1980 · F.D.R.: The Last Year as President Franklin D. Roosevelt
• 1980 · Haywire as Leland Hayward
• 1980 · Caboblanco as Gunther Beckdorff
• 1979 · Broadway on Showtime as Erie Smith
• 1979 · Hurricane as Capt. Charles Bruckner
• 1978 · The Kennedy Center Honors as Self
• 1978 · A Christmas to Remember as Daniel Larson
• 1978 · The Magic of David Copperfield as
• 1978 · Comes a Horseman as Jacob 'J.W.' Ewing
• 1977 · Julia as Dashiell Hammett
• 1977 · Washington: Behind Closed Doors as President Richard Monckton
• 1976 · The Spy Who Never Was as Inspector Barkan
• 1976 · All the President's Men as Ben Bradlee
• 1976 · Addie and the King of Hearts as James "Jamie" Mills
• 1975 · Mr. Sycamore as John Gwilt
• 1975 · A Moon for the Misbegotten as James Tyrone Jr.
• 1975 · The Easter Promise as James "Jamie" Mills
• 1975 · A Boy and His Dog as Lou Craddock
• 1974 · The Country Girl as Frank Elgin
• 1973 · The Thanksgiving Treasure as James "Jamie" Mills
• 1973 · Pat Garrett & Billy the Kid as Governor Wallace
• 1973 · Old Faithful as Jason Robards
• 1972 · The House Without a Christmas Tree as James "Jamie" Mills
• 1972 · Ghost Story as Elliot Brent
• 1972 · The War Between Men and Women as Stephen Kozlenko
• 1971 · Johnny Got His Gun as Joe's Father
• 1971 · Murders in the Rue Morgue as Cesar Charron
• 1970 · Fools as Matthew South
• 1970 · Julius Caesar as Marcus Brutus
• 1970 · The Ballad of Cable Hogue as Cable Hogue
• 1970 · Operation Snafu as Sam Armstrong
• 1970 · Tora! Tora! Tora! as General Walter C. Short
• 1968 · The Night They Raided Minsky's as Raymond Paine
• 1968 · Once Upon a Time in the West as 'Cheyenne'
• 1968 · Isadora as Paris Singer
• 1968 · The Dick Cavett Show as Self - Guest
• 1967 · Hour of the Gun as Doc Holliday
• 1967 · The Belle of 14th Street as Performer
• 1967 · The St. Valentine's Day Massacre as Al Capone
• 1967 · Divorce American Style as Nelson Downes
• 1967 · The Strange Case of Dr. Jekyll and Mr. Hyde as Dr. Henry Jekyll / Mr. Edward Hyde
• 1966 · Noon Wine as Royal Earle Thompson
• 1966 · Any Wednesday as John Cleves
• 1966 · ABC Stage 67 as Royal Earle Thompson
• 1966 · A Big Hand for the Little Lady as Henry Drummond
• 1966 · The Face of Genius as Narrator (voice)
• 1965 · A Thousand Clowns as Murray
• 1964 · Abe Lincoln in Illinois as Abraham Lincoln
• 1963 · Act One as George S. Kaufman
• 1963 · Bob Hope Presents the Chrysler Theatre as
• 1963 · The Danny Kaye Show as Self
• 1962 · Long Day's Journey Into Night as Jamie Tyrone
• 1962 · Tender Is the Night as Dick Diver
• 1961 · By Love Possessed as Julius Penrose
• 1960 · The Iceman Cometh as Theodore "Hickey" Hickman
• 1960 · The Bat as Detective Anderson
• 1959 · A Doll's House as Dr. Rank
• 1959 · Play of the Week as
• 1959 · For Whom the Bell Tolls as Robert Jordan
• 1959 · The Journey as Paul Kedes
• 1956 · Playhouse 90 as Robert Jordan
• 1956 · Tony Awards as Self - Host
• 1956 · Tony Awards as Self - Presenter
• 1955 · The Alcoa Hour as Bert Palmer
• 1953 · The Oscars as Self
• 1953 · General Electric Theater as Col. Carter
• 1952 · Omnibus as
• 1951 · Hallmark Hall of Fame as Dr. Rank
• 1951 · Hallmark Hall of Fame as Marcus
• 1951 · Hallmark Hall of Fame as Abe Lincoln
• 1951 · Hallmark Hall of Fame as Frank Elgin
• 1950 · What's My Line? as Self - Mystery Guest
• 1948 · Studio One as Frank Cameron
• 1948 · Studio One as Prisoner
• 1948 · Studio One as Walter Osgood
• 1948 · Studio One as Leonard O'Brien
• 1948 · The Philco Television Playhouse as Joe Grant
• 1948 · The Philco Television Playhouse as Mason
• 1948 · The Ed Sullivan Show as Self