WORTH 12 BUCKS?: I'm Still Here - 2 beer bottles

In 'Walk the Line',  Phoenix showed that he can prepare as much as any astronaut going to Mars, he can sing as well as Johnny Cash and he can be a showman when he wants to.  So are we to believe that this same actor would actually show up at a rap performance totally unprepared?

Yes, because that is part of the character he is playing: an unhinged Joaquin Phoenix.  The one he and Affleck created for this movie...and the