Credits

• 1995 · Star Trek: The Next Generation - Unification as Sarek (archive footage)
• 1991 · Star Trek VI: The Undiscovered Country as Sarek
• 1989 · The Radicals as Eberhard Hoffman
• 1988 · In the Heat of the Night as
• 1987 · Star Trek: The Next Generation as Sarek
• 1986 · Star Trek IV: The Voyage Home as Ambassador Sarek
• 1985 · Otherworld as
• 1984 · Star Trek III: The Search for Spock as Ambassador Sarek
• 1980 · Farewell to the Planet of the Apes as Urko
• 1980 · Life, Liberty and Pursuit on the Planet of the Apes as Urko
• 1980 · Treachery and Greed on the Planet of the Apes as Urko
• 1980 · The Forgotten City of the Planet of the Apes as Urko
• 1980 · Back to the Planet of the Apes as Urko
• 1979 · Star Trek: The Motion Picture as Klingon Captain
• 1979 · Buck Rogers in the 25th Century as Ambassador Duvoe
• 1979 · The Secret Empire as Emperor Thorval
• 1978 · Getting Married as Mr. Bloom
• 1977 · The Incredible Hulk as
• 1977 · Annie Hall as Navy Officer
• 1974 · Planet of the Apes as Urko
• 1974 · Little House on the Prairie as
• 1973 · Outrage as Mr. Chandler
• 1973 · The Magician as Foley
• 1973 · Star Trek as Sarek (voice) (uncredited)
• 1972 · Search as
• 1971 · Alias Smith and Jones as
• 1970 · Noon Sunday as Jason Cootes
• 1968 · Here Come the Brides as
• 1968 · Hawaii Five-O as Yoshio Nagata
• 1968 · Hawaii Five-O as Rogloff
• 1968 · Hawaii Five-O as Dan Bok
• 1968 · Hawaii Five-O as Commander Hawkins
• 1968 · Hang 'em High as Prosecutor
• 1967 · Mannix as
• 1967 · Judd for the Defense as
• 1967 · Cimarron Strip as
• 1966 · Mission: Impossible as Colonel Bakram
• 1966 · Mission: Impossible as Felipe Mora
• 1966 · Mission: Impossible as Col. Luis Cardoza
• 1966 · Mission: Impossible as Aristo Skora
• 1966 · Jericho as
• 1966 · Felony Squad as
• 1966 · Star Trek as Sarek
• 1966 · Star Trek as Romulan Commander
• 1965 · The Wild Wild West as
• 1965 · Run for Your Life as Col. Sebastian Peralta
• 1965 · The Greatest Story Ever Told as Balthazar
• 1964 · Another World as
• 1963 · The Power and the Glory as
• 1961 · The Defenders as Assistant District Attorney Holloman
• 1955 · Gunsmoke as Ira Stonecipher
• 1951 · Search for Tomorrow as