The PDC session videos are up on Channel 9: Breakout sessions
They don't seem to have download links for the WMV's (or at least, not for me), so if you want to download the video files you've got to view the source of the page and copy the wmv url into your browser.
For example, Ander's C# talk is available at:
Basically, replace TL16 in the above url for the session code to download other sessions.
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