Travel in your computer - Google Earth
Google launched their new version of Google Earth Today. This version is more involved in 3d Modelling of the Earth.
More enhancements in terms of navigation, zoom controls, languages are introduced.
With KML being made as a new international standard by Open Geospatial Consortium, they will take responsibility of maintain and extending it. By this, KML is going to be a popular standard in terms of mapping.
Checkout this video