Who do you think calls the shot in Hollywood? No, it isn't the money minting stars nor the flick funding big, fat, producers. The directors run the show in world's most famous movie industry. America has produced some astute, exceptionally gifted filmmakers who are lauded for their principled artistic vision, iconoclastic individuality, and Oscar-grabbing movies. In this fleeting world of fame and films, while a few talented survived, a great many promising filmmakers just faded with time. Regardless of ups and downs of fame and fortune, some American directors have managed to become the benchmarks of best cinema. Steven Spielberg, Woody Allen, Clint Eastwood, Alfred Hitchcock, Francis Ford Coppola, Quentin Tarantino are just a few Hollywood directors that the world easily reckons with, thanks to the large body of quality works that have given to Hollywood. Let us trail the timeline, trivia, and interesting facts on the life of famous American directors in the biographies here.