Obviously folks will want to check out the PDC web site at http://microsoftpdc.com/ for access to all the videos and slide decks. There are additional materials for some of the official announcements at the PDC press site, http://www.microsoft.com/presspass/events/pdc/default.aspx.
The data developer center can be found at http://msdn.com/data
As I mentioned during the talk, one of the sessions I attended was "Building Location Aware Applications with the SQL Spacial Library." I described a demonstration from that session where location information in an Excel spreadsheet was used to highlight portions of a map. There's a fairly comprehensive blog post outlining that demo from the presenter available at http://blogs.msdn.com/oliviermeyer/archive/2009/11/17/introducing-the-excel-spatial-spreadsheet-building-an-excel-add-in-for-doing-spatial-analysis-and-spatial-operations-in-net.aspx with a follow up blog post at http://blogs.msdn.com/oliviermeyer/archive/2009/12/29/the-excel-spatial-spreadsheet-part-deux.aspx.
Finally, during the session I mentioned a few speakers who stood out. Here are links to their blogs:
I hope everyone that attended the session got a little something out of it.