Google released their application called Google Earth for the Mac OS X platform yesterday (Windows version has been available for some time now). I got right on that and downloaded it.
Wow. I am really impressed with a great many of the features available here. This is one of the coolest applications I have ever used that I don't really have a use for. Of course, I am sure I will find a use for it at some point.
Free is such a good price.