Go4Expert - Free live OS

I was searching for web operating systems inorder to by pass a web filtering mechanism. I just got this URL. Its quite amazing and interesting.
http://floz.v2.cs.unibo.it:8880/
This has a list of OS which u can boot and work on it. It uses java applet to load the OS' image onto the screen. It'll be good if u use it with a high speed connection.

share ur comments.