As Tim Sneath just posted you can watch a lot of videos from a WPF Bootcamp delivered wpfbootcamp_cropearlier this year in Redmond as well as get your hands on a set of Labs with tutorial documents and full source code.

Except Microsoft speakers you can view presentations from the technical guys that built some of the first WPF applications such as Yahoo Messenger, North Face Explorer, Vertigo's Family Tree application and more.  

A really must see for Windows Presentation Foundation learners.