Last Wednesday, I had the pleasure of presenting at the BaltoMSDN user group in Hunt Valley, MD on Windows Presentation Foundation. It was a lively group, with lots of questions, both on WPF as well as on related (and not-so-related) technologies.
I've gotten several requests since the meeting for the slides and demo I used. The best source for most things .net 3.0-related is the .net Framework 3.0 site. Specifically, you can find the slide deck I used here, and the "feature fest" demo I showed is here. There's much more available, particularly in terms of samples and code snippets, so be sure to check out the main WPF downloads page.
My thanks to the folks at BaltoMSDN for having me, and for a lively and entertaining meeting.