Good overview of Agile (videos)

http://www.autumnofagile.net/

Difference between Agile Themes, Epics, and User Stories

http://agile101.net/2009/08/10/the-difference-between-agile-themes-epics-and-user-stories/

Overview of TFS support for agile/scrum

http://blogs.msdn.com/b/bharry/archive/2009/05/19/tfs-2010-project-management.aspx

Agile Planning Tools in Visual Studio Team System 2010

http://msdn.microsoft.com/en-us/magazine/dd347827.aspx#id0100021