Like spinning over Earth in Celestia? Try this...

[buggs_moran]

http://worldwind.arc.nasa.gov/

Beware, it can be addictive...

1) Use your left mouse button to drag Earth to a nifty spot
2) Scroll in to zoom in
3) At a comfortable distance, hold down the right mouse button and drag towards you.

NOW THAT IS COOL

and it has potential. Big files tho'