He has appeared in eight films that have been selected for the National Film Registry by the Library of Congress as being "culturally, historically or aesthetically" significant: Wer die Nachtigall stört (1962), Bullitt (1968), M*A*S*H (1970), Der Pate (1972), Der Dialog (1974), Der Pate 2 (1974), Network (1976) and Apocalypse Now (1979).