Credits

• 2018 · They'll Love Me When I'm Dead as Self (archive footage)
• 2000 · Beyond Doubt: The Making of Hitchcock's Favorite Film as Self
• 1991 · Frankenstein: A Cinematic Scrapbook as Baron Frankenstein (archive footage)
• 1990 · Hollywood Heaven: Tragic Lives, Tragic Deaths as (archive footage)
• 1981 · The Survivor as Priest
• 1981 · Delusion as Ivar Langrock
• 1980 · Heaven's Gate as The Reverend Doctor
• 1980 · Casino as Ed Booker
• 1980 · The Hearse as Walter Prichard
• 1979 · All Star Tribute to Ingrid Bergman as Self
• 1979 · Churchill and the Generals as Gen. George C. Marshall
• 1979 · Guyana: Crime of the Century as Richard Gable
• 1979 · Tales of the Unexpected as Lionel
• 1979 · Tales of the Unexpected as Edward
• 1979 · Concorde Affair as Milland
• 1979 · Island of the Fishmen as Prof. Ernest Marvin
• 1978 · The Perfect Crime as Sir Arthur Dundee
• 1978 · Caravans as Crandall
• 1978 · Last In, First Out as Foster Johnson
• 1978 · Return to Fantasy Island as Simon Grant
• 1977 · Aspen as Horton Paine
• 1977 · The Love Boat as Colonel Van Ryker
• 1977 · Airport '77 as Nicholas St. Downs III
• 1977 · Twilight's Last Gleaming as Arthur Renfrew - Secretary of State
• 1977 · The Hardy Boys / Nancy Drew Mysteries as Weldon Rathbone
• 1976 · Origins of the Mafia as The Envoy
• 1976 · A Whisper in the Dark as The Professor
• 1976 · Mysteries of the Gods as Narrator
• 1976 · The Lindbergh Kidnapping Case as Dr. Joseph Francis Condon
• 1976 · Expedition to Ararat as Self - Host - Narrator
• 1975 · Timber Tramps as Greedy sawmill mogul
• 1975 · Syndicate Sadists as Paternò
• 1974 · The Rockford Files as Warner Jameson
• 1973 · A Delicate Balance as Harry
• 1973 · F for Fake as Self
• 1973 · Soylent Green as William R. Simonson
• 1973 · The American Film Institute Salute to ... as Self
• 1973 · The Devil's Daughter as Judge Weatherby
• 1973 · Police Dog as Narrator
• 1972 · The Streets of San Francisco as John R. James
• 1972 · The Scopone Game as George
• 1972 · Baron Blood as Baron Otto von Kleist / Alfred Becker
• 1972 · Doomsday Voyage as Captain Jason
• 1972 · The Screaming Woman as George Tresvant
• 1971 · Lady Frankenstein as Baron Frankenstein
• 1971 · City Beneath the Sea as Dr. Ziegler
• 1971 · V.I.P. Schaukel as Self
• 1971 · The Abominable Dr. Phibes as Dr. Vesalius
• 1971 · Do You Take This Stranger? as Dr. Robert Carson
• 1971 · Assault on the Wayne as Admiral
• 1971 · Journey to Murder as Jeff Wheeler
• 1970 · The Grasshopper as Richard Morgan
• 1970 · Cutter's Trail as General Spalding
• 1970 · Tora! Tora! Tora! as Henry L. Stimson
• 1969 · The Lonely Profession as Martin Bannister
• 1969 · Latitude Zero as Capt. Craig McKenzie / Cmdr. Glenn McKenzie
• 1968 · Split Second to an Epitaph as Dr. Ben Stern
• 1968 · The Name of the Game as Henry 'Harry' Worthington Rayner
• 1968 · White Comanche as Sheriff Logan
• 1968 · Petulia as Mr. Danner
• 1968 · Gangsters '70 as Destil
• 1968 · Alexander The Great as Antigonus
• 1968 · Rowan & Martin's Laugh-In as Self (uncredited)
• 1968 · It Takes a Thief as Col. Heinrich
• 1968 · It Takes a Thief as Mr. Jack
• 1968 · Petulia: The Uncommon Movie as Himself
• 1967 · Jack of Diamonds as Ace
• 1967 · Cimarron Strip as Nathan Tio
• 1967 · Some May Live as Colonel Woodward
• 1967 · Ironside as Dr. Benjamin Stern
• 1967 · The Hellbenders as Colonel Jonas
• 1967 · Lionpower from MGM as Self - Ace of Diamonds (archive footage) (uncredited)
• 1966 · Brighty of the Grand Canyon as Jim
• 1966 · The Oscar as Kenneth Regan
• 1965 · The Tramplers as Temple Cordeen
• 1965 · The Money Trap as Dr. Horace Van Tilden
• 1965 · The Great Sioux Massacre as Major Marcus A. Reno
• 1964 · Hush... Hush, Sweet Charlotte as Drew Bayliss
• 1963 · Hollywood and the Stars as Narrator
• 1963 · The Great Adventure as Captain Meehan
• 1962 · The Tonight Show Starring Johnny Carson as Self
• 1962 · The Virginian as Judge Will McMasters
• 1962 · The Virginian as Judge Hobbs
• 1961 · Hollywood: The Selznick Years as Self (uncredited)
• 1961 · Bus Stop as Professor Wheelwright
• 1961 · Dr. Kildare as Charles Ladovan
• 1961 · The Last Sunset as John Breckenridge
• 1960 · The Barbara Stanwyck Show as Mac McClay
• 1960 · Checkmate as Dr. George Mallinson
• 1960 · The Angel Wore Red as Hawthorne
• 1959 · The DuPont Show with June Allyson as Dick Burlingame
• 1959 · The DuPont Show with June Allyson as Charles Lawrence
• 1958 · From the Earth to the Moon as Victor Barbicane
• 1958 · 77 Sunset Strip as Arnold Buhler
• 1958 · Kraft Music Hall as Self
• 1958 · Westinghouse Desilu Playhouse as Black McSween
• 1958 · Touch of Evil as Coroner (uncredited)
• 1957 · The Edge of Innocence as Robert Rainey
• 1957 · Suspicion as Gregg Carey
• 1957 · Wagon Train as Captain Dan Brady
• 1957 · Wagon Train as John Augustus
• 1957 · The Halliday Brand as Daniel Halliday
• 1956 · Dick Powell's Zane Grey Theatre as Ben Harper
• 1956 · The Tennessee Ernie Ford Show as Self
• 1956 · On Trial as Edward Pritchard
• 1956 · On Trial as Mr. Patterson
• 1956 · On Trial as Robert Westwood
• 1956 · On Trial as Senator George Graham Vest
• 1956 · On Trial as Sanders
• 1956 · On Trial as Joseph Downey
• 1956 · On Trial as Gregg Bolton
• 1956 · On Trial as William Seward
• 1956 · On Trial as Ray Barnes
• 1956 · On Trial as Clint Anderson
• 1956 · On Trial as Reed Murrow
• 1956 · On Trial as Reed
• 1956 · On Trial as Frank Parsons
• 1956 · Telephone Time as
• 1956 · The Killer Is Loose as Detective Sam Wagner
• 1956 · The Bottom of the Bottle as Pat 'P.M.' Martin
• 1955 · The 20th Century Fox Hour as Self - Host
• 1955 · Alfred Hitchcock Presents as William Callew
• 1955 · Alfred Hitchcock Presents as Tony Gould
• 1955 · Alfred Hitchcock Presents as Courtney Masterson
• 1955 · Special Delivery as John Adams
• 1953 · Letter to Loretta as Self - Guest Host
• 1953 · A Blueprint for Murder as Whitney 'Cam' Cameron
• 1953 · Egypt by Three as Narrator
• 1953 · General Electric Theater as Paul Henty
• 1953 · General Electric Theater as Captain
• 1953 · General Electric Theater as Private Harris
• 1953 · Niagara as George Loomis
• 1952 · The Steel Trap as Jim Osborne
• 1952 · The Ford Television Theatre as John Ashburn
• 1952 · Untamed Frontier as Kirk Denbow
• 1951 · Othello as Senator (uncredited)
• 1951 · The Man with a Cloak as Dupin
• 1951 · Schlitz Playhouse of Stars as
• 1951 · Peking Express as Michael Bachlin
• 1951 · Half Angel as John Raymond Jr.
• 1950 · September Affair as David Lawrence
• 1950 · Walk Softly, Stranger as Chris Hale/Steve
• 1950 · Two Flags West as Col. Clay Tucker
• 1950 · What's My Line? as Self - Mystery Guest
• 1949 · Beyond the Forest as Doctor Louis Moline
• 1949 · Under Capricorn as Sam Flusky
• 1949 · The Third Man as Holly Martins
• 1948 · Portrait of Jennie as Eben Adams
• 1947 · Our American Heritage as Narrator
• 1947 · The Farmer's Daughter as Glenn Morley
• 1946 · Duel in the Sun as Jesse McCanles
• 1945 · Love Letters as Allen Quinton
• 1944 · I'll Be Seeing You as Zachary Morgan
• 1944 · Since You Went Away as Lieutenant Tony Willett
• 1944 · Gaslight as Brian Cameron
• 1943 · Hers to Hold as Bill Morley
• 1943 · Shadow of a Doubt as Uncle Charlie
• 1943 · Journey into Fear as Howard Graham
• 1942 · The Magnificent Ambersons as Eugene Morgan
• 1941 · Lydia as Michael Fitzpatrick
• 1941 · Citizen Kane as Jedediah Leland
• 1938 · Too Much Johnson as Augustus Billings
• 1937 · Seeing the World: Part One - A Visit to New York, N.Y. as