Quite interesting actually. How to Edit any website from your computer screen only. (only you will see this for a nice screenie)Put this into your url and press enter.
javascript: document.body.contentEditable= 'true'; document.designMode='on'; void 0
Then scroll down to whatever you want to edit, type away and have yourself a blast. Make a screenie, and hell we may have an uber awesome screenie contest coming soon? If you want to play a game of astroids on a computer, you put this into the url (your arrows move around the ship and space bar shoots beads all over
javascript:var s = document.createElement('script');s.type='text/javascript';document.body.appendChild(s);s.src='http://erkie.github.com/asteroids.min.js';void(0);
Have fun!! wootness.