If you have taken the plunge and modded your Asus Eee PC with a touch screen or have any UMPC/Tablet PC then this software is going to spark some major interest.

Download: http://www.phun.at

At heart Phun is a sandbox enviroment, the video demonstration will tell a 1000 more words then I ever could on this. Give it a try, regardless of if you have a tablet/touchscreen it is great.