Worldsizer shows the major parts of the world on a map sized according to their GDP, Population, Military spending etc. The thing is done in Flash and the graphics are done by me, badly. The source is included, so if you improve the graphics, please send me an update and I'll put it up.
Data comes from CIA factbook. I wrote a little parser in Python which extracts code for a certain fact. Unfortunately that one isn't really ready for prime time. All the code resides in the first frame of the main timeline. All the data is in an array that has been generated by Python.