This is a picture of Flickr user clickflashwhirr (links to all her portraits), who's taken a picture of herself in the exact same position for over 500 days. Then, artist/possible stalker Tiemen Rapati took those photos and combined them into a single one by "[counting] the individual RGB values for each pixel and for each portrait, and [dividing] those values by the number of portraits." So, in summary, clickflashwhirr is vain as f*** and Teimen is more than a little on the creepy side.
Thanks to Eyecrusties, who -- are you trying to tell me I need to wash my face?!