Chris Hopkins, Visio guru at Microsoft, has a trailblazing tutorial on the web demonstraing Visio Services 2010, SharePoint 2010, and the new JavaScript mashup API for Visio Graphics Services.  Get the demo & white paper here.

The simplicity and elegance, and just how plain easy it is to build graphically rich and interactive reports using Visio is truly revolutionary.   The integration with Silverlight and how easy it is to embed Visio reports in a web page is wow factor to the max.