Oh well...I am biased since I worked on this...but I really think this is a COOL demo of silverlight and AJAX and what eCommerce scenarios can look like.
I especially like the use of videos which I was initially skeptical about but I think can actually influence the impulsive buyers a lot while creating a really immersive shopping experience for the other visitors as well. You will of course need to install Silverlight if it's not already installed on your machine.
Here is a page with video on it.
And on this page you can see a sunglass and zoom in easily and see various colors etc. of the sunglass via hovering. Try adding to shopping cart for a very snazzy UI experience as well.
All in all I think it is a great demo - Kudos to everyone who worked on it!