New project at Quasimondo: Find out where you are
Mario Klingemann has made a cool Flash frontend to show where you are.
Pretty nifty huh - just in case you are somewhere in the world, with your laptop, and don't have a clue where you are located. :-)
Its based on a PHP backend that checks your IP address against the NetGeo database to get your location data, and then plot it on a map. Seems to work fairly well. At least it said that I am in Oslo, Norway - which is right.
I did a little research, and found a cool little PHP script that used GD/CSS to show the same kind of data, not as cool a frontend - but might be something to look at if you are interested in such things: IP-Atlas