It is far too elementary and unclever to even be considered a hack, but I wanted to create a map that showed the location of all the current major league ballparks. it took a side jaunt into using the python xml.dom.minidom to create (rather than parse) XML, but it wasn't difficult. Witness the following crude attempt using the Yahoo! Simple Maps API:
Map of Ballparks
Caution: clinking on a link will probably not do what you expect. Thanks to Tom for providing me a file with the latitudes and longitudes of each park.
This uses the absolute most trivial, no programming, API that Yahoo! releases, and as such, isn't really all that much fun. I will work on something more advanced later.