Is This You?
This site is a collection of found photos. If you have ever lost a picture of yourself, somebody might have found it and submitted it to the site. The idea being that, if you recognize yourself, you can get the photograph back. If you don't, you can browse through hundreds of pictures of strangers all huddled together in small thumbnails, crowding a single webpage. A mildly eerie buzz might well ensue.
Check it out: http://www.isthisyou.co.uk/