I managed to get the Google Earth installer a while back, but have only been able to play with it since I got back from July 4th weekend.
In short: It is amazing.
I can’t even quantify how cool it is to be in orbit, sixteen thousand miles above the surface of the earth, then be able to drill down to see my office parking lot and be able to tell who was at work that day.
I just found the house in San Diego using landmarks.
The images are disturbingly wonderful. The user interface is good, although I don’t know how they could make it better. You basically drag yourself through the world with the mouse. The program itself is good fun, and it gives you a sense of perspective, in the truest sense of the word.