Don Cherry likes to emphasize his points with his hands. Whether he's calling people "turncoats" or just rambling about the Toronto Maple Leafs, the former Bruins coach and current CBC broadcaster is never at a loss for words and is never afraid to stamp his hands down to make a point.
One enterprising YouTube user noted Cherry's predilection for placing his hands on his desk while he speaks, and cut a recent "Coach's Corner" segment from Hockey Night in Canada to make it appear as if Cherry was attempting to play the piano.
It's pretty neat. See for yourself in the video below.