I saw a link on Google's main page a couple of days ago pointing to
Keyhole. I clicked the link and didn't think much of the site it took me to, so I just pressed the back button and went to search for whatever I was going to search for.
Today, a coworker (Nick), downloaded the proggie and showed it to me. Whoa! I ran right back to the site, downloaded, and installed keyhole. You get a free 7 day trial, and the subscription isn't much.
Here's an aerial shot of a part of Midland:

You can go anywhere you want and zoom as far in as you want. Some cities have better resolutions than others, but it's fun to look around. This could come in handy while traveling, if you have an Internet connection.