XMLDataSource

There's a good overview of ths control on MSDN with examples like Binding a Tabular Control to the XmlDataSource Control and Filtering Data Using the XmlDataSource Control.

However, the reall meaty stuff is found on the blogs, and on http://www.asp.net. 

• Retrieving XML Data with XmlDataSource Control - see how to retrieve both remote and local XML data and display it in a data Web control.
• Accessing and Updating Data in ASP.NET 2.0: Retrieving XML Data with XmlDataSource Control
• Introduction to XMLDataSource control in ASP.NET 2.0 by Keyvan Nayyeri.
• MSDN article on the class can be seen here
• And here is the quickStart tutorial for XMLDatasource control

There's also a few gotchas with this control, like it's lack of namespace support, documented in my blog post here.

Enjoy!