| Movie | 2007 | Spider-Man 3 | Ben Parker | |
| Movie | 2004 | Spider-Man 2 | Ben Parker | |
| Movie | 2002 | Spider-Man | Ben Parker | |
| Movie | 1983 | Spaces: The Architecture of Paul Rudolph | Narrator | |
| Movie | 1996 | Escape from L.A. | President | |
| Movie | 1965 | Masquerade | David Frazer | |
| Movie | 1976 | Obsession | Michael Courtland | |
| Movie | 1965 | Love Has Many Faces | Pete Jordon | |
| Movie | 1983 | Class | Mr. Burroughs | |
| Movie | 1983 | Star 80 | Hugh Hefner | |
| Movie | 1976 | Midway | Cmdr. Jessop | |
| Movie | 1991 | Wild Hearts Can't Be Broken | Dr. W.F. Carver | |
| Movie | 1994 | Renaissance Man | Colonel James | |
| Movie | 1970 | Too Late the Hero | Lt. Sam Lawson | |
| Movie | 1975 | Three Days of the Condor | J. Higgins | |
| Movie | 1968 | The Devil's Brigade | Major Alan Crown | |
| Movie | 2004 | Riding the Bullet | Farmer | |
| Movie | 1987 | Malone | Charles Delaney | |
| Movie | 1972 | The Great Northfield Minnesota Raid | Cole Younger | |
| Movie | 1963 | PT 109 | Lt. John F, Kennedy | |
| Movie | 1961 | Underworld U.S.A. | Tolly Devlin | |
| Movie | 1968 | Charly | Charlie Gordon | |
| Movie | 2001 | Falcon Down | Buzz Thomas | |
| Movie | 2002 | 13th Child | Mr. Shroud | |
| Movie | 1956 | Autumn Leaves | Burt Hanson | |
| Movie | 1964 | The Best Man | Joe Cantwell | |
| Movie | 1959 | Gidget | The Big Kahuna | |
| Movie | 1958 | The Naked and the Dead | Robert Hearn | |
| Movie | 1967 | The Honey Pot | William McFly | |
| Movie | 1983 | Brainstorm | Alex Terson | |
| Movie | 1968 | The Sunshine Patriot | Christopher Ross / Arthur Selby | |
| Movie | 1964 | 633 Squadron | Wing Commander Roy Grant | |
| Movie | 1963 | Sunday in New York | Adam Tyler | |
| Movie | 1955 | Picnic | Alan Benson | |
| Movie | 1959 | Battle of the Coral Sea | Lt. Cmdr. Jeff Conway | |
| Movie | 1998 | Race | Jack Durmann | |
| Movie | 2004 | Los Angeles Plays Itself | President in Escape From L.A. (archive footage) | |
| Movie | 1985 | Shaker Run | Judd Pierson | |
| Movie | 1976 | Shoot | Rex | |
| Movie | 1980 | The Pilot | Mike Hagan | |
| Movie | 1973 | The Men Who Made the Movies: Raoul Walsh | Narrator | |
| Movie | 1987 | Ford: The Man and the Machine | Henry Ford | |
| Movie | 1961 | All in a Night's Work | Warren Kingsley, Jr. | |
| Movie | 1986 | Galapagos: My Fragile World | Narrator | |
| Movie | 1972 | J.W. Coop | J.W. Coop | |
| Movie | 1958 | Natchez | Danny Carson | |
| Movie | 1974 | Man on a Swing | Lee Tucker | |
| Movie | 1958 | The Girl Most Likely | Pete | |
| Movie | 1973 | The Men Who Made the Movies: Alfred Hitchcock | Narrator | |
| Movie | 1985 | The Key to Rebecca | Maj. William Vandam | |
| Movie | 1975 | Out of Season | Joe Tanner | |
| Movie | 1980 | Dominique | David Ballard | |
| Movie | 1961 | The Big Show | Josef Everard | |
| Movie | 1977 | Fraternity Row | Narrator (voice) | |
| Movie | 1963 | My Six Loves | Rev. Jim Larkin | |
| Movie | 1962 | The Interns | Dr. John Paul Otis | |
| Movie | 1990 | Dead Reckoning | Daniel Barnard | |
| Movie | 1973 | The Man Without a Country | Philip Nolan | |
| Movie | 1982 | Two of a Kind | Frank Minor | |
| Movie | 1998 | Assignment Berlin | Colonel Cliff Garret | |
| Movie | 1992 | Wind | Morgan Weld | |
| Movie | 1979 | The Little Prince | Narrator / Pilot | |
| Movie | 1995 | Dazzle | Mike Kilkullen | |
| Movie | 1961 | The Two Worlds of Charlie Gordon | Charlie Gordon | |
| Movie | 1973 | Ace Eli and Rodger of the Skies | Ace Eli Walford | |
| Movie | 1995 | The Sunset Boys | Ted Roth | |
| Movie | 2002 | Joan Crawford: The Ultimate Movie Star | Self - Actor | |
| Movie | 1996 | Joan Crawford: Always the Star | Self | |
| Movie | 1989 | William Holden: The Golden Boy | Self | |
| Movie | 2001 | Mach 2 | Vice President Pike | |
| Movie | 1959 | As the Sea Rages | Clements | |
| Movie | 1965 | Up from the Beach | Sgt. Edward Baxter | |
| Movie | 1977 | The American Indian's Sacred Ground | Self - Host | |
| Movie | 2001 | 'Obsession' Revisited | Self | |
| Movie | 1986 | Dreams of Gold: The Mel Fisher Story | Mel Fisher | |
| Movie | 1943 | Corvette K-225 | Lookout | |
| Movie | 1999 | Family Tree | Larry | |
| Movie | 1975 | My Father's House | Tom Lindholm Jr. | |
| Movie | 1943 | We've Never Been Licked | Adams (uncredited) | |
| Movie | 1958 | Days of Wine and Roses | Joe Clay | |
| Movie | 1976 | Return to Earth | Col. Edwin A. 'Buzz' Aldrin Jr. | |
| Movie | 1978 | Overboard | Mitch Garrison | |
| Movie | 1974 | A Tree Grows in Brooklyn | Johnny Nolan | |
| Movie | 2002 | Behind the Ultimate Spin: The Making of 'Spider-Man' | Self | |
| Movie | 1973 | The Men Who Made the Movies: Vincente Minnelli | Narrator (voice) | |
| Movie | 1992 | Lincoln | Noah Brooks (voice) | |
| Movie | 1982 | Night of 100 Stars | Self | |
| Movie | 1998 | Lusitania | Narrator | |
| Movie | 1995 | Sonja Henie: Queen of the Ice | Narrator | |
| Movie | 1974 | Lincoln: Trial by Fire | Narrator(voice) | |
| Movie | 2010 | Accidental Icon: The Real Gidget Story | | |
| TV Show | 1981 | Falcon Crest | Michael Ranson | 28 |
| TV Show | 1959 | The Twilight Zone | Christian Horn | 1 |
| TV Show | 1994 | The American Revolution | George Washington | 6 |
| TV Show | 1962 | The Merv Griffin Show | Self | 3 |
| TV Show | 1959 | The Twilight Zone | Jerry Etherson | 1 |
| TV Show | 1953 | The United States Steel Hour | | 1 |
| TV Show | 1995 | The Outer Limits | Theodore Harris | 1 |
| TV Show | 1963 | The Outer Limits | Alan Maxwell | 1 |
| TV Show | 1977 | Washington: Behind Closed Doors | William Martin | 6 |
| TV Show | 1956 | Playhouse 90 | | 1 |
| TV Show | 1968 | Rowan & Martin's Laugh-In | Self | 1 |
| TV Show | 1961 | The Mike Douglas Show | Self | 4 |
| TV Show | 1973 | The Men Who Made the Movies | Self - Narrator (voice) | 9 |
| TV Show | 1956 | Playhouse 90 | Danny Carson | 1 |
| TV Show | 1975 | Saturday Night Live | Self - Cameo (uncredited) | 1 |
| TV Show | 1996 | With God on Our Side: The Rise of the Religious Right in America | Self - Narrator (voice) | 6 |
| TV Show | 1968 | The Dick Cavett Show | Self - Guest | 1 |
| TV Show | 1966 | Batman | Shame | 5 |
| TV Show | 1962 | The Tonight Show Starring Johnny Carson | Self | 3 |
| TV Show | 1956 | Playhouse 90 | Lieutenant | 1 |
| TV Show | 1961 | The Mike Douglas Show | Self - Co-Host | 1 |
| TV Show | 1971 | Film '72 | Self | 1 |
| TV Show | 1944 | Golden Globe Awards | Self - Presenter | 1 |
| TV Show | 1994 | American Cinema | Self | 1 |