The acme mapper has been modified to use these images as well.

I don't have the link handy, but you can look at SFO airport and read
United on one of the buildings. It's pretty impressive stuff.

This will get you in the neighborhood
http://mapper.acme.com/?lat=37.621152&long=-122.38541&scale=11&theme=ColorImage&width=3&height =2&dot=Yes