This week's Countdown to PDC reveals a little more than before.  Leaking a little bit about the upcoming session update next week.  Surface, SharePoint, Live Platform, Identity, Mesh, SQL Server 2008, Exchange, Ad Platform, Office Communication Server, Windows 7, Open XML, Silverlight, ASP.NET, Oslo, Virtualization, XNA and so much more content we can hardly keep our hard hats on!  Why haven’t you registered for the PDC yet?!  Plus Mike issues a new Hard Hat Challenge – will the winner this week be 9 years old?  And, if you’re really curious about capturing the brainpower . . . go to: