Late last night I banged together Brutal! (yes, if you are wondering the exclamation mark is vital :P) a one page RPG system designed specifically to introduce my son to roleplaying.
Here it is here -
https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0BzKxJ3ErEEznOTVhMjFjN2ItNGQ4Zi00NDA1LTljZDQtYTE2ZDRiNzQ3MmMx&hl=en_US But my challenge to you is do me one better - create your own one page RPG - any theme or setting and post it up somewhere. I'd be interested to see what comes out of it!