Google Earth is pretty cool, but there's a new toy out there from he who must not be named and even you MSFT haters gotta admit, it's pretty darn good. Isn't competition a glorious thing?
Among other pluses, it works within the browser. Or at least within IE, which should be fine for everyone except the iconoclasts.
Check it out:
http://local.live.com/. (*)
(
local.live.com has been around for a while, offering superior basic mapping capabilities. The real-time 3D stuff is just built into that framework.)
* I'm j-man and I approve of this message.