Take a look at MapCruncher. A very interesting new map mashup technique from the folks at Microsoft Research. It basically allows you to overlay any digital map image on top of a normal, zoomable Virtual Earth map.
Google added a new layer to its own mapping application to show transit routes in the 400+ cities where it has data. The result is an easy way to see nearby bus and train stops on the web or on some mobile phones. Unfortunately, neither the data nor the imagery is available in the API version of Google Maps.
Developer Richard Brundritt has created a new Flight Simulator plugin for Microsoft Virtual Earth (our Virtual Earth API profile) that uses the VE3D map control to provide a very cool user experience.By leveraging the 3D API, Richard has managed to create the first flight simulation experience