Going into PDC 05 I had heard of and played with WCF and WPF and Vista.  And probably one of the most talked about items I hadn't seen much on was LINQ.  I was totally caught off guard by Workflow though.  For each person I suppose there is some different "new thing".  What about PDC 05 caught you off guard or made you go WOW.

Any predictions on new stuff for PDC 07?  What are you most looking forward to seeing more about?  I'm mildly excited about VS2007 and Longhorn Server.  I say mildly, because I'm cluelessa bout what might be in them.

I'd like to see a big push on Powershell and how GUI is built on it.  I hear about GUI on Powershell, like for Exchange 07, but never see any articles on it.  Maybe we'll see some Vista R2 stuff.