WorldWide Telescope
Technology
Wow! This is ueber cool if you are into space imagery and what not.
The WorldWide Telescope (WWT) is a Web 2.0 visualization software environment that enables your computer to function as a virtual telescope—bringing together imagery from the best ground and space-based telescopes in the world for a seamless exploration of the universe.
Want to see the same images that scientists at NASA use for their research or perform your own research with those images? Or do you want to see the Earth from the same perspective that astronauts see as they descend to Earth? How about taking a 5 minute break and viewing a panorama of a different city? Install WWT and start your explorations.
Go get it here: WorldWide Telescope experience.