Check out this insanely interesting site. And don't believe what it says; you can see it through java even if you are running internet explorer.

http://eyes.jpl.nasa.gov/exoplanets/exit.html

Very cool demo! 2nd attempt it loaded fine and it's just awesome to see all these planets.
And they just scratched the surface yet, there are so many more planets to find, I'm sure.
Specially earth size in habitable zone is hard to find, but there must be alot.
Maybe not in our near, and we have no warp drive yet, but who knows what's to come.
Maybe we just live 1000 years longer and get freezed for journey.
But I think till then already in our own solar system there's lots room to expand.

Ahh, that demo makes me dream.

Quite impressive indeed, but not that much different or better than Celestia ;-)

Well, this application is still in beta... But a little competition and diversity is always welcome. I for one wouldn't mind being able to choose from a dozen space-related applications.