Busby Berkeley (November 29, 1895 - March 14, 1976), born William Berkeley Enos in Los Angeles, California, was a highly influential Hollywood movie director and musical choreographer. His quintessential works used legions of chorus girls as geometric elements in elaborate production numbers. He started up as a theatrical director, just as many other movie directors. Unlike many of them at that time, he felt that a camera is something mobile and that its mobility should be used to allow movie audiences to see things and people by perspectives that the theatrical stage never could provide. This is why he played an enormous role in establishing movie musicals as a category in its own right.