I just heard about this piece of software put out by Nasa, and I have to say I'm impressed. Simply put, it's an impressive 3d globe. The images it gives you have to be pretty recent too because, well, here's an example.
Truck from World Wind(1.61mb png image)Truck from my windowSorry for the crappy shot of the truck, it was on my mobile and shot through a glarey window.
You can find the World Wind site
here. The program is about 250mb to download I think, but can use upto 2gigs(or whatever you specify), as it downloads the images from the satelites servers on demand and deletes least used map/image data. Definitely cool if you are into this sort of thing.