Artec has quite the fancy collections of 3d Scans over at http://www.artec3d.com/gallery/3d-models/ .
This model is of the scan of Soppho's Head. I think this model is absolutely beautiful and was thrilled to find it. The STL has been given a flat bottom and fixed for holes in netfabb.
I printed her in White PLA from ProtoParadigm. At arms length she looks like she was cast in plaster.
UPDATE: Added a slic3r friendly version by richrap that is half sized and tilted back 5 degrees.