It's raining arrows - another canvas demo

After playing around with canvas a little I realize I'm going to be spending way too much time fiddling with javascript + canvas stuff. It's just too fun! I learned that you can insert images as well into a canvas. And, get this, you can use data: urls to define that image's source!!! So you could completely create a complex image in canvas without having to go hit a server to fetch some sub-images.

This demo requires Firefox 1.5 beta.

How long before we see some seriously fun games using canvas?