Dr. WPF and Silverlight

So I know of this guy, 'Dr. WPF' and he is a 'huge'... Silverlight fan [insert sarcasm here]. well anyway he has done some Silverlight. He has a little 'test' app that is really cool. So just so you guys can check it out here is a link:

http://drwpf.com/blog/Home/tabid/36/EntryID/15/Default.aspx