Yes, Google Earth is extremely addicting.
I have found such places as the opening to Cheyenne Mountain (NORAD Headquarters) outside Colorado Springs, the US Air Force Academy outside Colorado Springs, the Battleship Arizona Memorial at Pearl Harbor (you can see the outline ofthe ship in the water), the Groom Lake military facility ("Area 51") in Nevada, the BioSphere2 dome in Arizona, the Hong Kong International Airport (a man-made island), and the famous Hollywood sign.
I do wish WDW had better resolution.
Happy Googling!