I spotted this very cool [non-SketchUp] video about an artist who is attempting not to 3D model, but to
draw, every building In New York. Sort of a parallel to the Google Earth 3D modeling project where users across the globe attempt to
model every structure that exists in the world.
James Gulliver Hancock is an Australian artist based in New York. See more of his incredible project and beautiful drawings here:
http://allthebuildingsinnewyork.blogspot.com/