Credits

• 2019 · The Twilight Zone: A 60th Anniversary Celebration as Citizen Gregori (archive footage)
• 1997 · Hey, Hey We're The Monkees as Self
• 1969 · The Picasso Summer as The Host (as Theo Marcuse)
• 1968 · The Wicked Dreams of Paula Schultz as Owl
• 1967 · Ironside as Bartender
• 1967 · The Invaders as Noel Markham
• 1966 · The Monkees as
• 1966 · The Time Tunnel as Lescaux
• 1966 · Star Trek as Korob
• 1966 · The Glass Bottom Boat as Gregor
• 1966 · The Last of the Secret Agents? as Zoltan Schubach
• 1966 · Batman as Von Bloheim
• 1965 · Harum Scarum as Sinan
• 1965 · Mara of the Wilderness as Jarnagan
• 1965 · The Cincinnati Kid as Felix
• 1965 · Hogan's Heroes as Ludwig Strasser
• 1965 · Hogan's Heroes as Pierre
• 1965 · Hogan's Heroes as General Freidrich von Heiner
• 1964 · Sands of Beersheba as Nuri
• 1964 · A Tiger Walks as Josef Pietz
• 1963 · For Love or Money as Artist
• 1962 · The Beverly Hillbillies as Nero
• 1962 · Hitler as Julius Streicher
• 1961 · The Two Little Bears as Janos
• 1961 · Operation Eichmann as Captain Felsner
• 1960 · The Case of the Dangerous Robin as Paul Agoura
• 1960 · The Case of the Dangerous Robin as Baw
• 1959 · The Twilight Zone as Citizen Gregori
• 1959 · The Twilight Zone as Farraday
• 1958 · The Further Adventures of Ellery Queen as Abel Bendigo
• 1957 · Have Gun, Will Travel as Bartender (as Ted Marcuse)
• 1957 · Jeanne Eagels as Dr. Richards (uncredited)
• 1957 · The 27th Day as Soviet Col. Gregor
• 1955 · The Desperate Women as Arzt