| Movie | 1955 | The Man with the Golden Arm | Louie | |
| Movie | 1986 | Raw Deal | Chief Harry Shannon | |
| Movie | 1983 | A Christmas Story | The Old Man | |
| Movie | 1999 | Pros & Cons | Mr. Stanford | |
| Movie | 1995 | Billy Madison | Brian Madison | |
| Movie | 1976 | No Deposit, No Return | Duke | |
| Movie | 1990 | By Dawn's Early Light | Condor | |
| Movie | 1984 | The Natural | Gus Sands | |
| Movie | 1992 | Happy Hell Night | Henry Collins | |
| Movie | 1987 | From the Hip | Craig Duncan | |
| Movie | 1977 | Airport '77 | Stan Buchek | |
| Movie | 1973 | The Night Strangler | Carl Kolchak | |
| Movie | 1985 | Turk 182! | Det. Kowalski | |
| Movie | 1988 | Dead Heat | Dr. Ernest McNab | |
| Movie | 1978 | Hot Lead & Cold Feet | Mayor Ragsdale | |
| Movie | 1990 | Captain America | General Fleming | |
| Movie | 1991 | Clara | Albert Kroll | |
| Movie | 1972 | The Night Stalker | Carl Kolchak | |
| Movie | 1958 | The Case Against Brooklyn | Pete Harris | |
| Movie | 1957 | The Delicate Delinquent | Mike Damon | |
| Movie | 1972 | Here Comes the Judge | Judge | |
| Movie | 1970 | The Challenge | Jacob Gallery | |
| Movie | 1973 | The Six Million Dollar Man | Oliver Spencer | |
| Movie | 1997 | Christmas Unwrapped: The History of Christmas | Mr. Parker (archive footage) | |
| Movie | 1955 | Summertime | Eddie Yaeger | |
| Movie | 1984 | The Baron and the Kid | Jack Beamer | |
| Movie | 1980 | Hangar 18 | Harry Forbes | |
| Movie | 1972 | Something Evil | Paul Worden | |
| Movie | 1991 | Blood and Concrete | Hank Dick | |
| Movie | 1970 | Tribes | Drake | |
| Movie | 1968 | Mission Mars | Col. Mike Blaiswick | |
| Movie | 1945 | She Wouldn't Say Yes | The Kid - Soldier in Hospital (uncredited) | |
| Movie | 1991 | Perfect Harmony | Mr. Hobbs | |
| Movie | 1964 | Bullet for a Badman | Sam Ward | |
| Movie | 1985 | My Wicked, Wicked Ways: The Legend of Errol Flynn | Dr. Gerrit Koets | |
| Movie | 1955 | The Court-Martial of Billy Mitchell | Capt. Russ Peters | |
| Movie | 1990 | Child in the Night | Os Winfield | |
| Movie | 1975 | B. Must Die | Pal Kovak | |
| Movie | 1971 | Mrs. Pollifax — Spy | Farrell | |
| Movie | 1995 | Derby | Lester Corbett | |
| Movie | 1988 | The Diamond Trap | Chief Walter Vadney | |
| Movie | 1972 | Say Goodbye, Maggie Cole | Dr. Lou Grazzo | |
| Movie | 1994 | A Perfect Stranger | John Henry Phillips | |
| Movie | 1971 | The Death of Me Yet | Joe Chalk | |
| Movie | 1972 | The Rookies | Sgt. Eddie Ryker | |
| Movie | 1981 | Firebird 2015 A.D. | Red | |
| Movie | 1988 | Inherit the Wind | E.K. Hornbeck | |
| Movie | 1993 | The American Clock | Older Arthur Huntington | |
| Movie | 1994 | Mysteries of the Ancient World | | |
| Movie | 1990 | Unclaimed Fortunes II | Host | |
| Movie | 1978 | Zero to Sixty | Michael Nolan | |
| Movie | 1970 | The Challengers | Jim McCabe | |
| Movie | 1965 | The Great Sioux Massacre | Captain Frederick William Benton | |
| Movie | 1972 | 43: The Richard Petty Story | Lee Petty | |
| Movie | 1968 | Boomerang, Dog of Many Talents | Barney B. Duncan | |
| Movie | 1967 | The Outsider | David Ross | |
| Movie | 1955 | A Word to the Wives... | George Peters | |
| Movie | 2004 | The 50 Worst Movies Ever Made | Red (archive footage) | |
| Movie | 1970 | Berlin Affair | Paul Killian | |
| Movie | 1979 | Ike | Gen. George S. Patton | |
| Movie | 1961 | Witchcraft: The Doll in Brambles | Fred | |
| Movie | 1992 | Mastergate | Folsom Bunting | |
| Movie | 1979 | Donovan's Kid | Timothy Donovan | |
| Movie | 1980 | Waikiki | Capt. McGuire | |
| Movie | 1957 | Beau James | Charley Hand | |
| Movie | 1969 | Anatomy of a Crime | David Ross | |
| Movie | 1991 | Preminger: Anatomy of a Filmmaker | actor (archive footage) (uncredited) | |
| Movie | 1971 | Banyon | Lieutenant Pete Cordova | |
| Movie | 1945 | Your Next Job | Balancing hobbyist | |
| Movie | 1945 | A Song to Remember | Student (uncredited) | |
| Movie | 1976 | Brinks: The Great Robbery | James McNally | |
| Movie | 1976 | Crackle of Death | Carl Kolchak | |
| Movie | 1971 | Mooch Goes to Hollywood | Darren McGavin (uncredited) | |
| Movie | 1990 | Kojak: It's Always Something | Wainwright | |
| Movie | 1959 | Disneyland '59 | Self | |
| Movie | 1976 | Law and Order | Deputy Chief Brian O'Malley | |
| Movie | 1972 | Sam Cade | | |
| Movie | 1979 | Love for Rent | Coach John Martin | |
| Movie | 1965 | African Gold | Mike Gregory | |
| Movie | 1978 | The Users | Henry Waller | |
| Movie | 1951 | Queen for a Day | Dan | |
| Movie | 1976 | Demon and the Mummy | Carl Kolchak | |
| Movie | 1984 | The Return of Marcus Welby, M.D. | Dr. David Jennings | |
| Movie | 1970 | The 48-Hour Mile | David Ross | |
| Movie | 1987 | Tales from the Hollywood Hills: Natica Jackson | A. Z. Nathan | |
| TV Show | 1984 | Murder, She Wrote | Martin Tremaine | 1 |
| TV Show | 1980 | Magnum, P.I. | Buck Gibson | 1 |
| TV Show | 1984 | Tales from the Darkside | Van Conway | 1 |
| TV Show | 1964 | The Man from U.N.C.L.E. | | 1 |
| TV Show | 1977 | The Love Boat | Lawrence Evans | 2 |
| TV Show | 2005 | Night Stalker | | 1 |
| TV Show | 1994 | Touched by an Angel | George Zarko | 1 |
| TV Show | 1994 | Gargoyles | G.F. Benton/Dominic Dracon (voice) | 1 |
| TV Show | 1960 | Route 66 | | 1 |
| TV Show | 1979 | Tales of the Unexpected | Sheriff Milt Singleton | 1 |
| TV Show | 1984 | Highway to Heaven | | 1 |
| TV Show | 1988 | Murphy Brown | Bill Brown | 4 |
| TV Show | 1980 | The Martian Chronicles | Sam Parkhill | 3 |
| TV Show | 1993 | Grace Under Fire | | 1 |
| TV Show | 1991 | The Commish | | 2 |
| TV Show | 1958 | Mickey Spillane's Mike Hammer | Mike Hammer | 79 |
| TV Show | 1955 | Gunsmoke | Will Helmick | 1 |
| TV Show | 1993 | The X-Files | Agent Arthur Dales | 2 |
| TV Show | 1948 | Studio One | Will Sorrell | 1 |
| TV Show | 1973 | The Evil Touch | | 3 |
| TV Show | 1996 | Millennium | Henry Black | 1 |
| TV Show | 1966 | Mission: Impossible | J. Richard Taggart | 1 |
| TV Show | 1991 | Sisters | | 1 |
| TV Show | 1960 | The Islanders | Phil | 1 |
| TV Show | 1988 | Monsters | | 1 |
| TV Show | 1974 | Kolchak: The Night Stalker | Carl Kolchak | 20 |
| TV Show | 1955 | Alfred Hitchcock Presents | Red Hillman | 1 |
| TV Show | 1966 | Felony Squad | | 1 |
| TV Show | 1959 | Rawhide | Jed Hadley | 1 |
| TV Show | 1967 | Cimarron Strip | | 1 |
| TV Show | 1973 | Police Story | | 1 |
| TV Show | 1962 | The Virginian | Mark Troxel | 1 |
| TV Show | 1955 | The Alcoa Hour | | 2 |
| TV Show | 1961 | The Defenders | Howard Potter | 1 |
| TV Show | 1983 | The Hitchhiker | Old Man | 1 |
| TV Show | 1954 | Climax! | Walter | 1 |
| TV Show | 1963 | Bob Hope Presents the Chrysler Theatre | | 1 |
| TV Show | 1969 | Bracken's World | | 1 |
| TV Show | 1948 | The Philco Television Playhouse | Bill Starbuck | 1 |
| TV Show | 1991 | Civil Wars | | 1 |
| TV Show | 1964 | The Rogues | Amos Champion | 1 |
| TV Show | 1961 | Ben Casey | | 1 |
| TV Show | 1959 | Riverboat | Captain Grey Holden | 44 |
| TV Show | 1960 | Stagecoach West | | 1 |
| TV Show | 1949 | Suspense | Ted Larson | 1 |
| TV Show | 1950 | Robert Montgomery Presents | Joe Gillis | 1 |
| TV Show | 1951 | Tales of Tomorrow | | 1 |
| TV Show | 1969 | The Bold Ones: The Lawyers | | 1 |
| TV Show | 1967 | Custer | | 1 |
| TV Show | 1961 | Dr. Kildare | Prof. Felix Holman | 4 |
| TV Show | 1961 | The Defenders | Marty Wisnovsky | 1 |
| TV Show | 1983 | Small & Frye | | 6 |
| TV Show | 1968 | The Outsider | David Ross | 26 |
| TV Show | 1961 | The Mike Douglas Show | Self | 1 |
| TV Show | 1962 | The Virginian | Sam Evans | 1 |
| TV Show | 1955 | Gunsmoke | Lon Gorman | 1 |
| TV Show | 1955 | Gunsmoke | Joe Bascome | 1 |
| TV Show | 1979 | Ike | Gen. George S. Patton | 3 |
| TV Show | 1989 | Around the World in 80 Days | Benjamin Mudge | 3 |
| TV Show | 1968 | The Name of the Game | Jesse Gil McCray | 1 |
| TV Show | 1968 | The Name of the Game | Sam Hardy | 1 |
| TV Show | 1955 | Alfred Hitchcock Presents | Lyle Endicott | 1 |
| TV Show | 1971 | V.I.P. Schaukel | Self | 1 |
| TV Show | 1948 | Studio One | Johnny Quigg | 1 |
| TV Show | 1948 | Studio One | Tom Kendall | 1 |
| TV Show | 1971 | Owen Marshall: Counselor at Law | McClain | 1 |
| TV Show | 1954 | The Wonderful World of Disney | John Jay Forrest | 2 |
| TV Show | 1952 | Death Valley Days | Zacharias Gurney | 1 |
| TV Show | 1994 | Burke's Law | Conrad Hill | 1 |
| TV Show | 1963 | Bob Hope Presents the Chrysler Theatre | Franklin Carson | 1 |
| TV Show | 1993 | Fallen Angels | Old Man | 1 |
| TV Show | 1949 | Suspense | | 1 |
| TV Show | 1950 | What's My Line? | Self - Mystery Guest | 1 |
| TV Show | 1973 | The Dean Martin Celebrity Roasts | Self | 1 |
| TV Show | 1954 | The Wonderful World of Disney | Timothy Donovan | 1 |
| TV Show | 1962 | The Match Game | Self | 5 |
| TV Show | 1962 | The Alfred Hitchcock Hour | Sheridan Westcott | 1 |
| TV Show | 1968 | The Name of the Game | Eddie Gannon | 1 |
| TV Show | 1967 | Mannix | Mark | 1 |
| TV Show | 1969 | Love, American Style | Corbett | 1 |
| TV Show | 1952 | Omnibus | | 1 |
| TV Show | 1951 | Casey, Crime Photographer | Jack Casey | 54 |
