not bad.  great concept, good execution. 

reminds me of this guy i worked with, whos name escapes me.  he used to imitate basicly everybody.  he could do an uncanny b-real, while at the same time doing sen dogs back ups.  nelly was big at the time, and hed belt out 'down down baby' about every ten minutes.  if you were in the next room, youd swear it was the a capella version. 

sadly, dude had no charisma of his own, so it was actually annoying to be around him.  this is better.