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| Title | Year | Status | Character |
|---|
| Night Gallery | 1971 | TV Series | Jared Soames (segment "Death in the Family") |
| The City | 1971 | TV Movie | Sheridan Hugotor |
| Vanished | 1971 | TV Movie | Arthur Ingram |
| The Pursuit of Happiness | 1971 | Daniel Lawrence |
| The Virginian | 1970-1971 | TV Series | Judge Carver
Judge Elmo J. Carver |
| The Brady Bunch | 1970 | TV Series | J.P. Randolph |
| Tora! Tora! Tora! | 1970 | Colonel Rufus S. Bratton |
| A Clear and Present Danger | 1970 | TV Movie | Senator Stowe |
| Paris 7000 | 1970 | TV Series |
| Government Story | 1969 | TV Series | Co-narrator (1969) |
| The Littlest Angel | 1969 | TV Movie | God |
| The Bridge at Remagen | 1969 | Brig. Gen. Shinner (as E. G. Marshall) |
| This Town Will Never Be the Same | 1969 | TV Movie | Bruce Crichton |
| A Case of Libel | 1968 | TV Movie | Paul Cleary |
| Flesh and Blood | 1968 | TV Movie | John |
| Paris brûle-t-il? | 1966 | Intelligence Officer Powell (uncredited) |
| The Poppy Is Also a Flower | 1966 | Coley Jones |
| The Chase | 1966 | Val Rogers |
| The Defenders | 1961-1965 | TV Series | Lawrence Preston |
| The Presidency: A Splendid Misery | 1964 | TV Movie documentary | Andrew Jackson |
| Suspense | 1964 | TV Series |
| Town Without Pity | 1961 | Col. Jerome Pakenham |
| The DuPont Show of the Month | 1961 | TV Series | Jim Howard |
| Rawhide | 1961 | TV Series | Ben Foley |
| The Islanders | 1960 | TV Series | Curt Cober |
| Route 66 | 1960 | TV Series | Gerald Emerson |
| Moment of Fear | 1960 | TV Series | B.J. Benedict |
| ITV Play of the Week | 1960 | TV Series | Jim Downs |
| Sunday Showcase | 1959-1960 | TV Series | William Thompson / Judge Wingate |
| Play of the Week | 1959-1960 | TV Series | Halvard Solness
Lopanim |
| The Master Builder | 1960 | TV Movie | Solness |
| Cash McCall | 1960 | Winston Conway |
| The Robert Herridge Theater | 1960 | TV Series |
| Westinghouse Desilu Playhouse | 1959 | TV Series | Professor Eric Carson |
| Compulsion | 1959 | District Attorney Harold Horn |
| Playhouse 90 | 1957-1959 | TV Series | Capt. Jules Kilby / Merrill / Beria / ... |
| The Journey | 1959 | Harold Rhinelander |
| Pursuit | 1958 | TV Series | Tenner Hodges |
| The Buccaneer | 1958 | Gov. William Claiborne |
| Shirley Temple's Storybook | 1958 | TV Series | Rip Van Winkle / Merchant |
| Studio One in Hollywood | 1949-1958 | TV Series | Everett Metcalf / Harry Mork / Dr. Shratt / ... |
| The Seven Lively Arts | 1957 | TV Series | Narrator |
| Alfred Hitchcock Presents | 1957 | TV Series | Ronald J. Grimes |
| Suspicion | 1957 | TV Series | Paul Steppe |
| The Alcoa Hour | 1957 | TV Series | Shorty / Herman Magnus |
| Man on Fire | 1957 | Sam Dunstock |
| 12 Angry Men | 1957 | Juror 4 |
| The Bachelor Party | 1957 | Walter |
| Kraft Theatre | 1950-1957 | TV Series | Colonel Hodges
The Reverend
Macbeth |
| The Little Foxes | 1956 | TV Movie | Oscar |
| The Mountain | 1956 | Solange |
| Folio | 1956 | TV Series |
| General Electric Theater | 1955-1956 | TV Series | Jack |
| Playwrights '56 | 1956 | TV Series | Mr. X / Saul |
| The Scarlet Hour | 1956 | Lt. Jennings |
| Goodyear Playhouse | 1953-1956 | TV Series | Michael Riordan / Upton |
| The 20th Century-Fox Hour | 1955 | TV Series | Mr. Davies |
| The Left Hand of God | 1955 | Dr. David Sigman |
| The Elgin Hour | 1954-1955 | TV Series | Saul Hirsch / Brady Weeks |
| Ponds Theater | 1953-1955 | TV Series |
| You Are There | 1953-1955 | TV Series | Aristobulus
General George Washington
Nero
... |
| The Philco-Goodyear Television Playhouse | 1950-1955 | TV Series | Dennis Leighton / Jerry / N. Y. Times editor / ... |
| Armstrong Circle Theatre | 1952-1955 | TV Series | Harry |
| Producers' Showcase | 1955 | TV Series | Dr. Carlos Finlay |
| The Silver Chalice | 1954 | Ignatius |
| The Bamboo Prison | 1954 | Father Francis Dolan |
| Omnibus | 1954 | TV Series | Actor |
| Robert Montgomery Presents | 1954 | TV Series |
| Suspense | 1950-1954 | TV Series | Abner Snopes / Gavin Stevens / Eddie Hunt |
| Pushover | 1954 | Police Lt. Carl Eckstrom |
| Broken Lance | 1954 | Horace - The Governor |
| The Caine Mutiny | 1954 | Lt. Comdr. Challee |
| Justice | 1954 | TV Series |
| Inner Sanctum | 1954 | TV Series | Carl |
| Danger | 1951-1954 | TV Series |
| The Web | 1950-1953 | TV Series | Big Tommy |
| Campbell Summer Soundstage | 1953 | TV Series |
| Short Short Dramas | 1952-1953 | TV Series |
| Joan of Arc | 1952 | TV Movie |
| Lights Out | 1950-1952 | TV Series | Purdy |
| Police Story | 1952 | TV Series |
| Ordeal by White House | 1952 | TV Movie | Grover Cleveland |
| Anything Can Happen | 1952 | Immigration Officer (scenes deleted) |
| Cosmopolitan Theatre | 1951 | TV Series |
| The Great Merlini | 1951 | TV Movie | George Parker |
| Sure As Fate | 1950 | TV Series |
| Mama | 1950 | TV Series |
| Nash Airflyte Theatre | 1950 | TV Series |
| Pulitzer Prize Playhouse | 1950 | TV Series |
| The Trap | 1950 | TV Series |
| The Chevrolet Tele-Theatre | 1950 | TV Series | Henry |
| Actor's Studio | 1949-1950 | TV Series |
| The Ford Theatre Hour | 1949 | TV Series |
| Call Northside 777 | 1948 | Rayska (uncredited) |
| Untamed Fury | 1947 | Pompano, the dance caller |
| 13 Rue Madeleine | 1946 | Emile (uncredited) |
| The House on 92nd Street | 1945 | Attendant at Morgue (uncredited) |
| The Defenders: Choice of Evils | 1998 | TV Movie | Lawrence Preston |
| The Defenders: Payback | 1997 | TV Movie | Lawrence Preston |
| Miss Evers' Boys | 1997 | TV Movie | The Senate Chairman |
| Absolute Power | 1997 | Walter Sullivan |
| Nixon | 1995 | John Mitchell |
| Courthouse | 1995 | TV Series | Judge Sam Sykes |
| Chicago Hope | 1994-1995 | TV Series | Dr. Arthur Thurmond |
| Oldest Living Confederate Widow Tells All | 1994 | TV Movie | Prof. Taw, Old Folks Home Resident |
| The Tommyknockers | 1993 | TV Series | Ev Hillman |
| Russian Holiday | 1992 | Joe Meadows |
| Lincoln | 1992 | TV Movie | Gideon Welles (voice) |
| Consenting Adults | 1992 | George Gordon |
| The Cosby Show | 1991 | TV Series | Stanley Rappaport |
| Ironclads | 1991 | TV Movie | Commdr. Smith |
| Two Evil Eyes | 1990 | Steven Pike (segment "The Facts in the Case of Mr. Valdemar") |
| National Lampoon's Christmas Vacation | 1989 | Art |
| War and Remembrance | 1988-1989 | TV Mini-Series | Dwight D. Eisenhower |
| Murder, She Wrote | 1989 | TV Series | Prof. Leon Walker |
| The Hijacking of the Achille Lauro | 1989 | TV Movie | Stanley 'Stan' Kubacki |
| The Equalizer | 1988 | TV Series | Senator Virgil Thomas Blake |
| Tanner '88 | 1988 | TV Mini-Series | Gen. John Tanner |
| Spenser: For Hire | 1988 | TV Series | Judge Jason Kingsley |
| Emma: Queen of the South Seas | 1988 | TV Mini-Series | President Grant |
| Alfred Hitchcock Presents | 1987 | TV Series | Charlie Pitt |
| At Mother's Request | 1987 | TV Mini-Series | Franklin Bradshaw |
| Tales from the Darkside | 1986 | TV Series | Father |
| La gran fiesta | 1986 | Judge Cooper |
| Ike | 1986 | TV Movie | Dwight David Eisenhower |
| Under Siege | 1986 | TV Movie | Harold Sloan |
| Power | 1986 | Senator Sam Hastings, Ohio |
| My Chauffeur | 1986 | Witherspoon |
| The Winter of Our Discontent | 1983 | TV Movie | Mr. Baker |
| Saigon -Year of the Cat- | 1983 | TV Movie | The Ambassador |
| Falcon Crest | 1982-1983 | TV Series | Henri Denault |
| Kennedy | 1983 | TV Mini-Series | Joseph P. Kennedy |
| Eleanor, First Lady of the World | 1982 | TV Movie | John Foster Dulles |
| Creepshow | 1982 | Upson Pratt (segment "They're Creeping Up On You") |
| Nurse | 1982 | TV Series | Father |
| The Phoenix | 1981-1982 | TV Series | Dr. Ward Frazier |
| Gangster Wars | 1981 | Narrator (voice) |
| The Gangster Chronicles | 1981 | TV Mini-Series | Narrator |
| Superman II | 1980 | The President |
| Disaster on the Coastliner | 1979 | TV Movie | Roy Snyder |
| Vampire | 1979 | TV Movie | Harry Kilcoyne |
| The Lazarus Syndrome | 1978 | TV Movie | Dr. Mendel |
| Interiors | 1978 | Arthur |
| Billy Jack Goes to Washington | 1977 | Sen. Joseph Paine |
| Independence | 1976 | Short | Narrator (voice) |
| Collision Course: Truman vs. MacArthur | 1976 | TV Movie | President Harry S Truman |
| The Abduction of Saint Anne | 1975 | TV Movie | Bishop Francis Paul Logan |
| Money to Burn | 1973 | TV Movie | Jed Finnegan |
| The Bold Ones: The New Doctors | 1969-1973 | TV Series | Dr. David Craig |
| American Lifestyle | 1972 | TV Series | Narrator (1972) |
| Pursuit | 1972 | TV Movie | James Wright |
| Ironside | 1972 | TV Series | Dr. David Craig |
| Look Homeward, Angel | 1972 | TV Movie | W. O. Gant |
| Ellery Queen: Don't Look Behind You | 1971 | TV Movie | Dr. Cazalis |