Crazy Reverse Slam Dunk Pulled Off By J.R. Smith -[VIDEO]

This was an awesome ally-oop reverse slam dunk pulled off by NY Knicks JR Smith. This is almost just a s good as when Blake Griffin hopped over a car and slammed dunked the basket ball in the 2011 slam dunk contest. I'm surprised JR didn't hit his head on the rim after the slam he pulled off on this dunk.

He got some major air-time!