by Mike Krumboltz On the count of three, say it with us. Ready? One, two, three: "We knew it!" Film director Casey Affleck has admitted that his so-called documentary " I'm Still Here ," about Joaquin Phoenix 's retirement from acting and pursuit of a career in rap music, is a performance and not real. In an interview with The New York Times , Affleck explains that he never intended the film, which has been the subject of much speculation regarding its legitimacy,