Oh yah this is RIGHT up my alley! Gotta love these guys, devoted to getting the most out of the capabilities of Google Earth. GEH (Google Earth Hacks) has a downloads sections which includes added 3d models like the "Statue of Liberty" and the "Golden Gate Bridge", network-linked weather map image overlays, and even REAL-TIME traffic maps in Atlanta and Seattle. I expect great things from GEH. They also have forums for talking about discovering and hacking GEarth.