Theo Marcuse

1955

• [ ] The Desperate Women (Arzt) 

1957

• [ ] Jeanne Eagels (Dr. Richards (uncredited)) 
• [ ] The 27th Day (Soviet Col. Gregor) 

1961

• [ ] Operation Eichmann (Captain Felsner) 
• [ ] The Two Little Bears (Janos) 

1962

• [ ] Hitler (Julius Streicher) 

1963

• [ ] For Love or Money (Artist) 

1964

• [ ] Sands of Beersheba (Nuri) 
• [ ] A Tiger Walks (Josef Pietz) 

1965

• [ 6/10 ] The Cincinnati Kid (Felix) 
• [ ] Harum Scarum (Sinan) 
• [ ] Mara of the Wilderness (Jarnagan) 

1966

• [ ] The Last of the Secret Agents? (Zoltan Schubach) 
• [ ] The Glass Bottom Boat (Gregor) 
• [ ] The Glass Bottom Boat (Gregor - Spy with Cigar (uncredited)) 

1967

• [ ] Ironside (Bartender) 

1968

• [ ] The Wicked Dreams of Paula Schultz (Owl) 

1969

• [ ] The Picasso Summer (The Host (as Theo Marcuse)) 

1997

• [ ] Hey, Hey, We're The Monkees (Self) 

2019

• [ ] The Twilight Zone: A 60th Anniversary Celebration (Citizen Gregori (archive footage))