What's Cool in WPF

Some of the new controls in Windows Presentation Foundation are, in the lack of a better word, brilliant! For a starter, look at the xamCarouselPanel in Infragistics NetAdvantage package. Here is a screen shot of a WPF front end I’m working on for Linq query engine:
 

In case you have been living under the rock for the past two years and has never heard WPF or XAML before, Josh Smith’s five part guided tour serves as a fantastic starting point.