That would be great wcp, those maps are excellent. I was also pretty bored tonight and decided to play around with Google Maps and make a little mashup just to see how it would turn out, after seeing those maps that you made. It's a nice way to visualise but not at all better than yours, but still interesting. If you want to see it, it's at
http://gregduh.googlepages.com/map.htm but it's nothing too special, just a product of some boredom.