Free App: AirPort Radar

At first I thought this was another one of those handy-dandy flight tracking widgets, but AirPort Tracker it's actually a:

"free and convenient tool for quickly scanning the area for AirPort and other wireless networks. It will work with AirPort cards, MacWireless 11g PC Cards, and 11g PCI cards."

* Courtesy of macwireless.com

If you're in the habit of taking your laptop with you everywhere you go, this could very well come in handy. I look forward to testing it out the next time I leave my house.