haha..years ago when I used to do Win32/MFC development I was in the habit of writing code that painted random pixel colors on my windows desktop...you get the psychedelic effect if you don't do bit-block transfers but paint directly to the screen...it was always a fun time wasting activity.

I sometimes like to violate the browser canvas element in my spare time:

Chromium Version: http://webspekt.de/paintgen-client

node.js Version: http://webspekt.de/paintgen-server

My Server is pretty bad, so when in doubt, don't click.