Magnolia Pictures has provided us with the first clip from I'm Still Here, Casey Affleck's documentary about Joaquin Phoenix going nuts and becoming a rapper.  Or maybe it was a stunt.  Unfortunately, I missed my screening of the film, so I can't say which (and perhaps after seeing it, I still won't know for sure). However, I'll definitely be going to see it because the premise is too fascinating to pass up.

Hit the jump to check out the clip, which has Phoenix talking about the finer points of recording an album with Sean "Diddy" Combs.  I'm Still Here opens in limited release on Friday and will be available on Video-on-Demand on September 24th.

Here's the official synopsis for I'm Still Here:

The directorial debut of Oscar-nominated actor Casey Affleck, I’M STILL HERE is a striking portrayal of a tumultuous year in the life of internationally acclaimed actor Joaquin Phoenix. With remarkable access, I’M STILL HERE follows the Oscar-nominee as he announces his retirement from a successful film career in the fall of 2008 and sets off to reinvent himself as a hip hop musician. Sometimes funny, sometimes shocking, and always riveting, the film is a portrait of an artist at a crossroads. Defying expectations, it deftly explores notions of courage and creative reinvention, as well as the ramifications of a life spent in the public eye.

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