Channel 9 has two screencast that deal with the new geography data type in SQL Server 2008.
Saving Virtual Earth Polygons to SQL Server 2008
Marc Schweigert shows you how to draw a polygon on a Virtual Earth map and save it using ASP.NET AJAX, Windows Communication Foundation (WCF), LINQ to SQL, and the new geography data type in SQL Server 2008.
Rendering Polygons from SQL Server 2008 on Virtual Earth
Marc Schweigert builds off of the concepts shown in his previous screencast and shows you how to render a polygon on a Virtual Earth map using REST, Windows Communication Foundation (WCF), LINQ to SQL, and the new geography data type in SQL Server 2008.
Enjoy the shows