| Movie | 2005 | Little Caesar: End of Rico, Beginning of the Antihero | Self (archive footage) | |
| Movie | 1981 | Ghost Story | Edward Charles Wanderley | |
| Movie | 1972 | The Crooked Hearts | Rex Willoughby | |
| Movie | 1939 | Gunga Din | Thomas Anthony Ballantine | |
| Movie | 1933 | Morning Glory | Joseph Sheridan | |
| Movie | 1927 | Is Zat So? | G. Clifton Blackburn | |
| Movie | 1931 | Little Caesar | Joe Massara | |
| Movie | 1928 | A Woman of Affairs | Jeffry Merrick | |
| Movie | 1940 | Angels Over Broadway | Bill O'Brien | |
| Movie | 1947 | Sinbad the Sailor | Sinbad | |
| Movie | 1941 | The Corsican Brothers | Lucien Franchi / Mario Franchi | |
| Movie | 1938 | The Rage of Paris | Jim Trevor | |
| Movie | 1938 | The Young in Heart | Richard Carleton | |
| Movie | 1937 | The Prisoner of Zenda | Rupert of Hentzau | |
| Movie | 1934 | The Rise of Catherine the Great | Grand Duke Peter | |
| Movie | 1938 | Joy of Living | Daniel 'Dan' Brewster | |
| Movie | 1938 | Having Wonderful Time | Chick Kirkland | |
| Movie | 1987 | Hollywood Uncensored | Self - Host | |
| Movie | 1930 | The Dawn Patrol | Douglas 'Doug' Scott | |
| Movie | 1948 | That Lady in Ermine | Colonel Ladislas Karolyi Teglas / The Duke | |
| Movie | 1931 | The Stolen Jools | Douglas Fairbanks Jr. | |
| Movie | 1927 | A Texas Steer | Farleigh Bright | |
| Movie | 1928 | The Barker | Chris Miller | |
| Movie | 1932 | Love Is a Racket | James 'Jimmy' Russell | |
| Movie | 1947 | The Exile | Charles II | |
| Movie | 1930 | Outward Bound | Henry | |
| Movie | 1978 | Kingdom Of Gifts | The Proud King | |
| Movie | 2000 | Mary Pickford: A Life on Film | Self | |
| Movie | 1932 | Hollywood on Parade No. A-1 | Self | |
| Movie | 1929 | Our Modern Maidens | Gil Jordan | |
| Movie | 1936 | Accused | Tony Seymour | |
| Movie | 1932 | Union Depot | Charles 'Chick' Miller | |
| Movie | 1951 | Mr. Drake's Duck | Donald 'Don' Drake | |
| Movie | 1930 | Loose Ankles | Gil | |
| Movie | 1950 | State Secret | Dr. John Marlowe | |
| Movie | 1939 | Rulers of the Sea | David 'Davie' Gillespie | |
| Movie | 1931 | I Like Your Nerve | Larry O'Brien | |
| Movie | 1937 | When Thief Meets Thief | Ricky Morgan | |
| Movie | 1933 | Parachute Jumper | Bill Keller | |
| Movie | 1940 | Green Hell | Keith Brandon | |
| Movie | 1932 | Scarlet Dawn | Baron Nikita 'Nikki' Krasnoff | |
| Movie | 1935 | Man of the Moment | Tony Woodward | |
| Movie | 1933 | Captured! | Lieutenant Fred Digby | |
| Movie | 1983 | Hollywood Out-takes and Rare Footage | Self (archive footage) (uncredited) | |
| Movie | 1928 | The Power of the Press | Clem Rogers | |
| Movie | 1931 | Chances | Jack Ingleside | |
| Movie | 1932 | It's Tough to Be Famous | Scott 'Scotty' McClenahan | |
| Movie | 1933 | The Life of Jimmy Dolan | Jimmy | |
| Movie | 1932 | Hollywood on Parade No. A-3 | Self | |
| Movie | 1930 | Party Girl | Jay Rountree | |
| Movie | 1923 | Stephen Steps Out | Stephen Harlow Jr. | |
| Movie | 1939 | The Sun Never Sets | John Randolph | |
| Movie | 1934 | Success at Any Price | Joe Martin | |
| Movie | 1935 | Mimi | Rodolphe | |
| Movie | 1940 | Safari | Jim Logan | |
| Movie | 1933 | The Narrow Corner | Fred Blake | |
| Movie | 2004 | Checking Out: Grand Hotel | Self (archive footage) | |
| Movie | 1929 | The Show of Shows | Ambrose in 'Bicycle Built for Two' Number (uncredited) | |
| Movie | 1929 | The Forward Pass | Marty Reid | |
| Movie | 1967 | The Funniest Man in the World | Narrator | |
| Movie | 2002 | Joan Crawford: The Ultimate Movie Star | Self (archive footage) | |
| Movie | 1925 | Stella Dallas | Richard Grosvenor | |
| Movie | 1930 | One Night at Susie's | Dick Rollins | |
| Movie | 1936 | The Amateur Gentleman | John Beverley aka Barnabas Barty | |
| Movie | 1990 | You're the Top: The Cole Porter Story | Self | |
| Movie | 1990 | Night of 100 Stars III | Self | |
| Movie | 1996 | The Battle Over Citizen Kane | Self | |
| Movie | 1978 | The Art of Film: The Many Roles of Alec Guinness | Narrator | |
| Movie | 1930 | An Intimate Dinner in Celebration of Warner Bros. Silver Jubilee | Self | |
| Movie | 1925 | The Air Mail | Sandy | |
| Movie | 2004 | On Location with Gunga Din | Self / Thomas Anthony Ballantine (archive footage) | |
| Movie | 1949 | The Fighting O'Flynn | The O'Flynn | |
| Movie | 1988 | Cary Grant: A Celebration of a Leading Man | Self | |
| Movie | 1958 | Chase a Crooked Shadow | Self - Epilogue (uncredited) | |
| Movie | 1996 | Joan Crawford: Always the Star | Self (archive footage) | |
| Movie | 1927 | Man Bait | Jeff Sanford | |
| Movie | 1953 | Three's Company | Narrator / Anthony | |
| Movie | 2001 | Goldwyn: The Man and His Movies | Self (archive footage) | |
| Movie | 1930 | The Way of All Men | Billy Bear | |
| Movie | 1986 | Strong Medicine | Eli Camperdown | |
| Movie | 2008 | Mary Pickford: The Muse of the Movies | Self (archive footage) | |
| Movie | 1980 | The Hostage Tower | Malcolm Philpott | |
| Movie | 1929 | Fast Life | Douglas Stratton | |
| Movie | 1928 | The Garden of Eden | Busboy (uncredited) | |
| Movie | 1926 | The American Venus | Triton | |
| Movie | 1925 | Wild Horse Mesa | Chess Weymer | |
| Movie | 1930 | Little Accident | Norman Overbeck | |
| Movie | 1940 | Cavalcade of the Academy Awards | Self | |
| Movie | 1929 | The Careless Age | Wyn | |
| Movie | 1980 | From Raquel with Love | The Almighty | |
| Movie | 1938 | Hollywood Goes to Town | Self | |
| Movie | 1931 | How I Play Golf, by Bobby Jones No. 10: 'Trouble Shots' | Self - Golfer (uncredited) | |
| Movie | 1928 | The Toilers | Steve | |
| Movie | 1927 | Women Love Diamonds | Jerry Croker-Kelley | |
| Movie | 1950 | The Costume Designer | Self (archive footage) | |
| Movie | 1968 | Red and Blue | Millionaire | |
| Movie | 1979 | Red, White, and Zero | Millionaire | |
| Movie | 1954 | The Awakening | Self - Host | |
| Movie | 1998 | Star Power: The Creation Of United Artists | Self | |
| Movie | 1978 | The Art of Film: Vintage Hitchcock | Narrator | |
| Movie | 1953 | The Genie | The Genie | |
| Movie | 1926 | Broken Hearts of Hollywood | Hal Terwilliger | |
| Movie | 1985 | George Stevens: A Filmmaker's Journey | Self | |
| Movie | 2009 | 1939: Hollywood's Greatest Year | Self (archive footage) | |
| Movie | 1916 | American Aristocracy | Newsboy (uncredited) | |
| Movie | 1983 | La Belle Epoque | Self / Narrator | |
| Movie | 1928 | Dead Man's Curve | Vernon Keith | |
| Movie | 1982 | The Pirates of Penzance | Self - Host | |
| Movie | 1982 | Trial by Jury | Self - Host | |
| Movie | 1982 | Cox and Box | Self - Host | |
| Movie | 1982 | HMS Pinafore | Self - Host | |
| Movie | 1983 | The Mikado | Self | |
| Movie | 1982 | The Gondoliers | Self - Host | |
| Movie | 1982 | Iolanthe | Self - Host | |
| Movie | 1990 | Vivien Leigh: Scarlett and Beyond | Self | |
| Movie | 1926 | Padlocked | Sonny Galloway | |
| Movie | 1982 | Night of 100 Stars | Self | |
| Movie | 1931 | The Aviator | Alain | |
| Movie | 1966 | The Canterville Ghost | Mr. Otis | |
| Movie | 1991 | Stars and Stripes: Hollywood and World War II | Self | |
| Movie | 1930 | Screen Snapshots Series 10, No. 1 | Self | |
| Movie | 1982 | Laurence Olivier: a life | Self | |
| Movie | 2021 | The Real Charlie Chaplin | | |
| Movie | 1968 | The Legend of Robin Hood | King Richard | |
| TV Show | 1971 | The Sonny & Cher Comedy Hour | Self | 1 |
| TV Show | 1960 | Route 66 | Charles Clayton | 1 |
| TV Show | 1962 | The Merv Griffin Show | Self | 9 |
| TV Show | 1968 | Rowan & Martin's Laugh-In | Self (uncredited) | 2 |
| TV Show | 1950 | Your Show of Shows | Self | 1 |
| TV Show | 1966 | ABC Stage 67 | Mr. Otis | 1 |
| TV Show | 1956 | The Dinah Shore Chevy Show | Self | 2 |
| TV Show | 1953 | Douglas Fairbanks, Jr., Presents | Self - Host | 1 |
| TV Show | 1956 | The Steve Allen Show | Self | 1 |
| TV Show | 1961 | Dr. Kildare | Dr. Robert Devlin | 1 |
| TV Show | 1987 | The Dame Edna Experience | Self | 1 |
| TV Show | 1961 | The Mike Douglas Show | Self - Co-Host | 10 |
| TV Show | 1984 | The Compleat Gilbert & Sullivan | Self - Host | 1 |
| TV Show | 1950 | The Bob Hope Show | Self | 4 |
| TV Show | 1948 | The Ed Sullivan Show | Self | 5 |
| TV Show | 1989 | B.L. Stryker | White | 1 |
| TV Show | 1973 | The American Film Institute Salute to ... | Self | 1 |
| TV Show | 1971 | The Pearl Bailey Show | Self | 1 |
| TV Show | 1961 | The Mike Douglas Show | Self | 6 |
| TV Show | 1959 | The Big Party | Self – Host | 1 |
| TV Show | 1977 | The Love Boat | Elliott Norman | 2 |
| TV Show | 1977 | The Love Boat | Elliott Banning | 1 |
| TV Show | 1956 | Cinépanorama | Self | 1 |
| TV Show | 1956 | The Ford Show | Self | 1 |
| TV Show | 1950 | What's My Line? | Self | 2 |
| TV Show | 1968 | The Dick Cavett Show | Self - Guest | 2 |
| TV Show | 1986 | Strong Medicine | Eli Camperdown | 2 |
| TV Show | 1982 | Yesteryear | Self | 1 |
| TV Show | 1950 | What's My Line? | Self - Panelist | 1 |
| TV Show | 1971 | Great Performances | Self | 1 |
| TV Show | 1967 | Omnibus | Self - Narrator | 3 |
| TV Show | 1988 | American Experience | Self | 1 |
| TV Show | 1980 | Hollywood | Self | 5 |
| TV Show | 1974 | Dinah! | Self | 1 |
| TV Show | 1968 | Rowan & Martin's Laugh-In | Self | 1 |
| TV Show | 1962 | The Tonight Show Starring Johnny Carson | Self | 2 |
| TV Show | 1956 | The Tennessee Ernie Ford Show | Self | 1 |
