highest rated
acting
- Star Trek VI: The Undiscovered Country → Sarek
- The Radicals → Eberhard Hoffman
- In the Heat of the Night (TV)
- Star Trek: The Next Generation (TV) → Sarek
- Star Trek IV: The Voyage Home → Sarek
- Otherworld (TV) → Commander Perel Sightings
- Star Trek III: The Search for Spock → Ambassador Sarek
- Back to the Planet of the Apes → Urko
- The Forgotten City of the Planet of the Apes → Urko
- Farewell to the Planet of the Apes → Urko
- Life, Liberty and Pursuit on the Planet of the Apes → Urko
- Treachery and Greed on the Planet of the Apes → Urko
- Buck Rogers in the 25th Century (TV) → Ambassador Duvoe
- Star Trek: The Motion Picture → Klingon Captain
- The Secret Empire (TV) → Emperor Thorval
- Cliffhangers (TV) → Emperor Thorval
- Getting Married → Mr. Bloom
- The Incredible Hulk (TV)
- Annie Hall → Navy Officer
- Little House on the Prairie (TV) → Peter Ingalls
- Planet of the Apes (TV) → Urko
- The Magician (TV) → Foley
- Star Trek (TV) → Sarek (voice) (uncredited)
- Outrage! → Mr. Chandler
- Search (TV)
- Alias Smith and Jones (TV)
- Noon Sunday → Jason Cootes
- Hawaii Five-O (TV) → Yoshio Nagata
- Hawaii Five-O (TV) → Rogloff
- Hawaii Five-O (TV) → Dan Bok
- Hawaii Five-O (TV) → Commander Hawkins
- Here Come the Brides (TV) → Aaron Stempel
- Hang 'em High → Prosecutor
- Mannix (TV)
- Judd, for the Defense (TV)
- Cimarron Strip (TV)
- Star Trek (TV) → Sarek
- Star Trek (TV) → Romulan Commander
- Mission: Impossible (TV) → Colonel Bakram
- Mission: Impossible (TV) → Felipe Mora
- Mission: Impossible (TV) → Col. Luis Cardoza
- Mission: Impossible (TV) → Aristo Skora
- Felony Squad (TV)
- Jericho (TV) → Philippe
- The Wild Wild West (TV)
- Run for Your Life (TV) → Col. Sebastian Peralta
- The Greatest Story Ever Told → Balthazar
- Another World (TV)
- The Power and the Glory
- The Defenders (TV) → Assistant District Attorney Holloman
- Gunsmoke (TV) → Ira Stonecipher
- Search for Tomorrow (TV)