Joaquin Phoenix's IMDb docket has remained empty since 2008's Two Lovers; since then, he's dedicated himself to immersion in the Phoenix we've seen making occasional embarrassing public performances over the past couple years, including an infamously spaced-out turn on Letterman, and now we see him here: overweight, drinking beer, snorting coke, ranting at his "friends"/assistants, and mumbling through the cluttered "who am I?" mess of a personality that's the plausible result of a lifetime of performing. Maybe he thought the conceit was worth sabotaging his career and reputation, if only for a time. Or maybe he just has the kind of relationship with director Casey Affleck that makes it cool for the guy who married his little sister to film him doing coke off of a call girl's tits, or getting shat on (on the face!) by a fed-up assistant, then releasing it in theaters around the world.