Dan Fernandez blogged about a new screen saver starter that uses RSS feeds for its display content:

http://blogs.msdn.com/danielfe/archive/2004/06/29/168449.aspx

Loosk like this is Microsoft's first shipped product that includes RSS support. It's the RSS "Screen Saver Starter Kit" in the newly-released C# Express (click to download). The Express programming tools are newly-minted Visual Studio 2005 Express versions.