I use Google Earth constantly. I don't travel that much anymore, so I don't really need GPS (though I'd love to have it to play with), but anytime I need to visualize a location, I look DOWN, then if possible, at the street view. As a hobby, I just 'drive' down random roads... mostly in the UK and Australia, as those are the best covered.... but huge areas of other places are now available.

see here!

I also use it to provide an easy guide to a local festival where my wife & I organize the crafts... Glen Echo, MD

(I have also been to Donuel's house a couple of times, as he lives only about 10 min. from me, but needing several tricky turns to find. It really helps to see the area before going there.)