Brian Hitney - a fellow devloper evangelist - has put together a fairly amazing tool called Worldmaps. Its an amaizing application of our technology set, and its fairly cool to boot. But by far the best part of the application is something he calls the Worldmaps Stumbler. Essentially its a Silverlight/Bing Maps control that plots out the active hits on your website. While mine is not all that exciting, check out Brian's Stumbler.
Sign up for Worldmaps today - its free and a really cool example of ASP.Net/Silverlight/Bing Maps!