Oooh, very nice indeed... and as a test of weight and position shifts I'd say this was pretty successful!
There were just a couple of transitions that I wasn't too sure about - I think it was the second shift of weight, when he drops his head right down and then looses his footing and nearly drops. Maybe it is the choice of pose but I think it was more the timing (the head seems to snap down too quickly and there was jusy not quite enough anticipation of the foot slip and drop)
But I have to say that overall this is darn nice and a well deserved frontpage plug. Hope you stick around here.