Bellamy appeared in over 100 films but won his greatest acclaim on Broadway, as a lionized presidential aspirant in "State of the Union" (1945); as an overzealous police officer in "Detective Story" (1949); and, especially, for his Tony Award-winning portrayal of Franklin Delano Roosevelt in "Sunrise at Campobello" (1958), which he repeated in the 1960 film. Bellamy also played Roosevelt in the TV miniseries "The Winds of War" (1983). Late in his career he contributed an excellent turn as a manipulative Wall Street mogul in the amusing social comedy "Trading Places" (1983).