Really, really cool. I've always loved that song as well.
You really nail the vocals on one it - almost so much so that it becomes a bit pointless since you're so close to the original. (mind you, this is meant more as a compliment than criticism. Very, very few can match Stevie!
)
You're really one hell of a singer. I hope that one day you'll introduce of to stuff that's yours all the way. (I'm not counting in the J Dilla stuff here, great as it is, since, as far as I have understood, that's tracks that you've expanded upon, right?)