If you are a network diagramming fan, then you probably know Al Edlund's work (http://visguy.com/vgforum/index.php?action=profile;u=14;sa=showPosts). I've turned his latest masterpiece into a real Visio Guy article, so the rest of the world can enjoy!
Using Visio 2010 Containers & Lists to Create Server Drilldowns with Excel Data (http://www.visguy.com/2010/06/05/using-visio-2010-containers-to-create-server-drilldowns-with-excel-data/)