If you enjoy this, you might also enjoy the Smithsonian's 3D image library, with models you can download and print:<p><a href="http://3d.si.edu/" rel="nofollow">http://3d.si.edu/</a>
They have a very high resolution model of Michaelangelo's "David", with over a billion polygons, but it takes special permission to get the data. They don't want people stamping out copies.