Check out what the Mandriva guys has been up to...

http://www.mandriva.com/projects/metisse (non-flash videos: http://www.mandriva.com/projects/metisse/download)

Now this is the stuff accelerated desktops should do instead of shaking my windows around. Since it's GPL I hope we'll see it in Ubuntu as well, or at the very least that the Compiz/Beryl people start making useful stuff like this.