One of my more recent projects has been re-working the network map for the local community wireless network. My efforts thus far can be found at http://map2.cuwireless.net. Credit for the CSS and the text accompanying the map goes to Ross. This is just the first part. The next stage is to add an admin/management interface.

The map is powered by PHP and the Google Maps API (which uses javascript). The Google Maps API is incredibly easy to use and has lots of features.