1. His Royal Majesty Ingmar Bergman
2. His Highness Stanley Kubrick
3. Others, in no particular order: Packinpah, Polanski, Tarkovski, Fosse, Cassavetes, Lynch, Coen brothers, Scorsese, Visconti, Stone, Ridley Scott, hmmm I must have omitted someone important to me, but these guys first came to mind.
What's your favourite Bergman film?
BTW, to the poster above me - please tell you are meaning Paul Thomas Anderson and not Paul W.S Anderson?!