A year and a half ago, actor Jaoquin Phoenix appeared on the Late Show with David Letterman and instantly weirded the general public out by showing off an entirely different persona unseen before. It was an awkward interview and a train wreck in more ways than one. And now after a year and a half, Joaquin reappeared on The Late Show to tell Dave and the rest of us that it was all just an act for a film he was making with Casey Affleck. WOW.