Since RunwayFinder was first featured on Google Maps Mania way back in 2007 a number of really cool features have been added to the map.
RunwayFinder is a flight planning tool for U.S. pilots that allows them to check out current weather conditions for airports, terminal charts, routes, range circles, and temporary flight restrictions.
Using Google Map's satellite view pilots can see the layout of runways, taxiways, and buildings (depending on the quality of the satellite images) before arriving at an airport. A chart data view has also been added to Google Map's default views to show aeronautical chart information such as obstructions and special use airspace.
RunwayFinder even has its own API that allows developers to embed RunwayFinder charts on their own websites.