A canvas app that you can play with explained using jsfiddle

I ran across this fiddle last night when I (accidentally) checked JSFiddle's Twitter account:

http://jsfiddle.net/zalun/5evBx/8/

I've recently been noticing that people who make experimental canvas apps often don't add significant comments that would help other people understand what they're doing. So here I added comments for every major action and I also added a bunch of stat trackers (like the current absolute x and y velocities) that I thought some stats people would like. If you want to add more, you can adjust it and hit "update", or you can just fork it to a new fiddle and start from scratch.

Have fun...