I'm not exactly sure what's going on here but it looks like electricity is being zapped onto the spinning CD and basically sucking and erasing all its data. What's left is a piece of plastic. There are easier ways to erase data but damn if I can find anything cooler. [BuzzFeed]
DISCUSSION
You could just stick em in the microwave for 5 - 10 seconds. It's not exactly the same as the above video, but it is equally awesome.