US Government on XML
I was surfing around yesterday for an XML document with all of the US States in it (didn't find it, but found some other interesting utility - http://www.codeproject.com/aspnet/SDIddlStatesPackage.asp) and came across a US Government website that publishes XML Documents and Schemas used by US House of Representatives (http://xml.house.gov/)! Now I haven't really thought too hard on how to best apply this, but it's encouraging that the government is participating in the XML movement. Nice job!
Since this prompted my interest, I dug a bit deeper (ok, ok....it was only once click deep) and found this site too: http://xml.gov/
I should also add that the webpage I was developing internally for leverages this tool as well - http://www.codeproject.com/cs/database/dbhelper.asp. Basically, you point it to a database, you select from the stored procedures available for that DB, and then it generates a C# class to wrap the call to that SP. It's nifty.