Michael Rys will be doing an MSDN Webcast on April 5th about Managing XML Data on the Database with SQL Server 2005 and Visual Studio 2005 (Level 300). The decription from the page:
"This session explores advanced concepts and techniques for working with XML data types using Microsoft SQL Server 2005 and Visual Studio 2005. Topics covered include casting to and from CLR types, working with XML on the provider level, and integrating with SQLXML 4.0. Learn how to pass XML into CLR stored procedures and functions and how to use that to extend the XML functionality on the server (using validation and XSLT)."
Go check it out if you're intrested in some of the new XML features in SQL Server 2005 and how to build applications on top of them with Visual Studio 2005.