This is seriously cool tech! I've been playing with the win32 version for awhile now, but the Mac version has been slow in coming. However the Mac beta has finally floated out and it works pretty damn good. I'm just now playing with it on my 867 12" AlBook, but be aware it requires Tiger. Search the net for filename google_earth.zip . . .
dan k
Google Earth is nice and everything, but what I'd really like to see is NASA World Wind ported to the Mac. I find World Wind works better than Google Earth for some purposes.