I know I am bit late, but nevertheless, if you want to see a nice and cool example of WPF/E driven web pages then you must navigate to www.windowsvista.si. Even if the page(s) are in Slovene you should understand much of what you'll see.
NOTE: WPF/E February CTP is used. If you don't have it installed then click on the top icon on the front page to install it. After you have WPF/E on local machine you should click on one of the two bottom icons. Enjoy.