Additional resources

Cool Google Maps, who knew maps could be fun? A lighter look at some of the maps mashups on the web.
Google Maps Mania Follows the development of websites, mashups and tools using the Google Maps technology.
Calculate distance and bearing between latitude/longitude points With this calculator you can calculate the distance between two points on the earth's surface, and also given an initial lat/lon point initial bearing and distance it calculates the destination location.
The Great Circle Distance Calculator Choose from different earth models to calculate distance between two points.