Last year, they are http://channel9.msdn.com/pdc2008/ , but I do not see http://channel9.msdn.com/pdc2009/ . Are they planning to release a video this year?
EDIT:
Within approximately 24 hours after the breakout session, they will publish the media from the session to http://microsoftpdc.com
EDIT1: Not much has changed, but they have a link to the video at http://microsoftpdc.com/Videos
EDIT2:
Weekends are saved. the videos are online http://microsoftpdc.com/Videos . I liked the violinist show.
http://microsoftpdc.com/Videos
Additional Information. and some potentially skipped videos here:
http://coolthingoftheday.blogspot.com/2009/11/pdc09-session-video-list-okay-so-i-lied.html
http://channel9.msdn.com/posts/NicFill/Channel-9-Live-at-PDC09-Schedule/
I think you can see it there .....