Mix 08 Sessions Published
The great folks here running Mix have done a excellent job getting the videos for the Mix session up already!
Check them out at :
http://sessions.visitmix.com/
Check out my session on Building an Ajax Application from scratch.. It was an all demo, no slides sort of talk , so it really stands out in the listing 
http://blogs.msdn.com/brada/archive/2008/03/07/mix-08-sessions-published.aspx
