Credits

• 1975 ·Hustleas Man in Phone Booth
• 1973 ·The Don Is Deadas Don Aggimio Bernardo
• 1972 ·The Manas Haley
• 1972 ·Man On A Stringas Carlo Buglione (as John Duke Russo)
• 1971 ·Maybe I'll Come Home in the Springas Doctor (uncredited)
• 1969 ·The Greatest Mother of 'em Allas Gene Frazer
• 1968 ·The Splitas Maccione (uncredited)
• 1968 ·Hawaii Five-Oas Abilleno
• 1968 ·Hawaii Five-Oas Willy Vance
• 1968 ·Hawaii Five-Oas Albert Jovanko
• 1968 ·Hawaii Five-Oas Eddie Rizzo
• 1967 ·The Invadersas Lt. Alvarado
• 1966 ·Mission: Impossibleas Tiso Kastner
• 1966 ·Star Trekas Lt. Commander Giotto
• 1966 ·Star Trekas Commodore Wesley
• 1963 ·The Fugitiveas Sergeant Endicot
• 1963 ·The Fugitiveas Bus Driver
• 1963 ·The Outer Limitsas Dr. Terrell
• 1962 ·Follow That Dreamas Al (as John Duke)
• 1961 ·The Crimebustersas Hood
• 1960 ·The Case of the Dangerous Robinas Teddy Thomas
• 1960 ·Pay or Die!as Lupo Miano (as John Duke)
• 1959 ·Never Steal Anything Smallas Ward (as John Duke)