Browsing the Longhorn newsgroups, I found a post by David Solomon saying that the Inside Windows 2000/XP/Server 2003 Interactive Video Tutorials CD-ROM was included in the PDC bags.  I had seen this CD in its innocuous blue cover, but I didn't realise that has 12 hours of video presentations, as well as an e-book version of Inside Windows 2000 version 3, and retails for US$950.

The content is really good.  This is great stuff for me as I need to improve my knowledge of Windows internals.  I would have liked to have attended Dave's pre-conference but I felt I had to hear the Web Services story.  Now with the videos on my laptop I can go through the material at my own pace. I'll never be bored on a train again.