It also allows you to see some really cool sights by using a 3D model of some locations. It won't create a 3D rendering of your own house, but try going to some scenic places with large elevation changes like Mount Ranier.
For those people who get really into this, you might even be able to submit your own scenic photos for inclusion in the program using the site http://www.panoramio.com/ which is also owned by Google. So give it a shot the next time you are in the library and find out what amazing things you can discover. Let us know if you find something really fascinating. We would love to see it as well.
(all photos came directly from Google Earth)