Shaggy Loner Hides out-- aka Joaquin Phoenix appears on Letterman
Really-- I think what's happened: Mark Ruffalo went out drinking with Joaquin Phoenix. Some homoerotic wrestling / strangling happened and Ruffalo killed him self-defense. Fearful of discovery, Ruffalo had the option of hiding the body of Joquin Phoenix or fessing up. Instead, he donned a beard, shaggy hair and glasses. Voila! Phoenix continues to live on. When Ruffalo went missing no one noticed.
But Mark Ruffalo wanted his old life back: so he's out on a tour to "retire" as Joaquin Phoenix.