Google Satellite Maps

Google add satellite photos to their Maps feature. Pretty cool.

Check out:
The White House (also check out the Congress building, by going south east on the road from the white house until it dead ends. For some reason they purposely make that blurry, but not the white house. Guess someone has their security priorities right)
Bill Gates' house (Zoom in all the way. It is still hard to make out, but look for the red dock that has dots above it in the water like buoys, and his special sand beach with imported sand. The house is to the right. It is partially hidden underground and in trees.)
Ground Zero

It is also fun to check out your own house and to zoom out all the way and look at the entire earth.