I am at the PDC have a great time. I haven't posted anything simply because I've been way too busy and so I'm just soaking everything in. I'm planning on posting my thoughts soon (if you care).
In the meantime here are a few links that point to things I've been checking out:
In addition I've been looking at the BizTalk 2006 talks, some of the WCF and WWF talks, and some of the Team System talks. Hopefully I'll have time to post more on all this later.
Update: A few more linqs: