SharePoint Data View Web Part

Hm...here's a neat definition I read:

"Data View Web Parts, also known as Data Views, enable the display of data from various data sources using the formalism of Extensible Stylesheet Language Transformations (XSLTs). A data view retrieves data from the data source in the form of XML, and applies XSLTs to it. This gives the developer a powerful and standards based way to display formatted data."

The only way to add this Web Part to SharePoint 2003 is Frontpage.
(Note: SharePoint 2007 will have it’s own editor)

The FrontPoint blog has a great example of using the Data View Web Part to query different lists throughout a SharePoint site.