That was indeed neat. I found myself at first not able to look away from the feet (not shadows) in the bottom of the frame, but at some point in the middle I let go of that and that's when the video really grew on me. The distortion in the skater that comes from the changing light is so cool when you let go of the feet anchoring the skater at the bottom of the frame.
That was really creative. It always blows my mind when I see things like this; I don't know if they'd seen this somewhere before (assuming they hadn't) but to me it seems like quite the original idea. It proves that you can make an original edit on a subject that's been filmed to shit.