Impressive, yet slightly scary, satellite images.

Google Earth is an application you can use to interactively view satellite images from anywhere around the world. The resolution of the images in the U.S. is scarily impressive. For example, you can clearly see the two cars parked in the driveway of my house. You can even demarcate points of interest, such as restaurants, on the images. The user interface is also well designed. Check it out if you haven't already.