Check out the new & improved Google Maps Hybrid Mode (here's the California Speedway), combining the regular map view and the satellite view. What won't they think of next?
Also... you may recall my post about Google Moon and the Google Copernicus Hosting Environment and Experiment in Search Engineering (G.C.H.E.E.S.E.). Be sure to visit Google Moon again, and zoom all the way in. :-)
Update:It appears that Google Maps now defaults to an "Earth" view. That is, you used to be able to search the U.S., the U.K. or Japan, you can now search all three from the same interface. Google's purchase of Keyhole has been a boone for the rest of us!