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All he needs is the commitment. And that's something bred into an actor-director. When Matt Dillon went looking for pointers before his directorial debut, he got a pep talk from director John Milius: "He told me there are two people who come onto a set believing they can make the greatest movie ever--the director and the actor." And who better to make that lovely hallucination come true than the actor-director? --Reported by Jeffrey Ressner/Los Angeles and Joel Stein/New York