I saw this demo a few weeks ago and was quite impressed (as was Tim)
Even if you’re not into healthcare software, Microsoft UK has produced a great demonstration of Silverlight 2.0 capabilities via the Patient Journey Demonstrator.
As a demonstrator, not everything works, but play around with some of the neat widgets:
If you don’t know what they want to show you, use the guide at the top:
The source is available. Of course, make sure the license works for you before downloading.