http://www.flashearth.com/
Check it yourself...

I use it since a while, more than one year ;-)

Yeah, it was around when I messed with the Maps API last year.
I think it has only Google Maps back then, now it has more options.

Couldn't find it here though:
http://www.google.de/search?sourceid=q=site:blog.outer-court.com+flashearth%2Ecom