Is Joaquin Phoneix off his rocker??

More weird behavior from movie star turned rapper, Joaquin Phoenix. 

In his latest stunt, at a performance in Miami last night, Phoenix jumped off stage and confronted a fan:

Prior to that, Phoenix appeared on the Late Show with David Letterman last month and raised many questions about his mental state as well as the validity of his new rap career:

Many believe that this all part of a grand hoax, and Phoenix's on-stage antics are fodder for Ben Affleck's brother, Casey, who is filming a documentary on Joaquin's transition from the silver screen to the recording booth. Casey Affleck is also Phoenix's brother-in-law.

Something tells me there is more to this story. Hopefully it will all become known soon. Until then, more craziness from Joaquin Phoenix as he keeps us guessing.