This actor was busy in "Dr. Strangelove", playing 3 roles
[DOC] [TLE] Dr. Strangelove, Or:... (1964) - Greatest Films [PAR] Dr. Strangelove, Or: How I Learned To Stop Worrying And Love The Bomb (1964) 
... At the Air Force base, Mandrake walks with the portable radio playing jazz ... of 
three roles) and his undersecretary advisors at the round war council table.