Paris-based photographer Thomas M. made a set of pictures showing people as the default Facebook profile image. He writes "The aim of this project is to humanize the Facebook default avatar provided at the first login." Mission accomplished.
Link via
Walyou | Artist's Website
http://media.photobucket.com/image/tool%20album%20art/InfernoSilver/Music/Classic%20Album%20Cover%20Art/Tool-Lateralus.jpg?o=4
Maybe you recognize it as the artwork of Alex Gray or as Album-art for the band Tool.