More Channel9 videos on SharePoint
First look at the next version of SharePoint
http://channel9.msdn.com/showpost.aspx?postid=115383
SharePoint Services and Workflow
http://channel9.msdn.com/showpost.aspx?postid=115364
Not really SharePoint related but interesting never the less. Windows Workflow Foundation
http://channel9.msdn.com/showpost.aspx?postid=115366