The Usergroup for Windows Vista and the .NET Framework 3.0 and 3.5.
For everyone who wants to see the slides from Scott's sessions at UK MIX '07 they are here (via Mike Ormond's blog)
http://weblogs.asp.net/scottgu/archive/2007/09/12/slides-samples-from-my-talks-from-mix-uk-building-silverlight-apps-with-net-and-building-asp-net-apps-with-vs-2008.aspx