http://earth.google.com/
http://earth.google.com/sites/

Much of the former keyhole product is now free after having been acquired by Google. there is a Beta 1 now available for download. There are some new updated features included. This is a fun product and I have found myself in past versions spending way too much time in it.

Here is a view showing the area where Autodesk's San Rafael Civic Center offices are located.
The Google Earth placemark kmz file. Download Autodesk-CivicCenter.kmz

Here is a view looking down from 4000 feet on the Autodesk offices and the Marin Civic Center which was designed by Frank Lloyd Wright.

San Francisco in 3D. Much seems to be from satelite but I heave heard they are also using trucks with laser scanners to acquire the buildings. I even had the streets overlaid on the imagery.

Another source of info here