Matt Inman has released a little AJAX application that uses the Google Map Javascript API to visually display the location of an IP address.
Creating a visual IP address map isn't a perfect location, so don't expect to see your home address show up. Instead, they usually do a pretty good job of tracking the IP address back to your local ISP. Interesting product none the less.
CNN's running a story about the British used "rock" to spy on Russia. Pretty interesting story and something I've never really given much thought to. It would be really easy to hide something in a rock that used bluetooth (or some other short range transmitter) to exchange data. I would have thought they'd have placed the rock next to a bench or something though.