On Wednesday you may want to take a little stroll over to here
Here's an overview
The Silverlight Blueprint for SharePoint is source code and guidance for developers describing how to use Microsoft Silverlight and Microsoft SharePoint Products and Technologies together in business applications and Internet Web sites. SharePoint applications that use Web Parts can now be built using Silverlight user interface elements. This capability enables a fresh look at data exposed through SharePoint Products and Technologies using the modern graphics capability in Silverlight.
Interesting times....