Just moving this old one I posted once before over from the social chat. I think a little monkey forget to do it.
Memory Tests
http://www.icn.ucl.ac.uk/facetests/index.php
From Prosopagnosia Research Center (prosopagnosia is 'face blindness)
Vision, Memory and Face Recognition
* Prosopagnosia Research Center
* Institute of Cognitive Neuroscience, UCL
* Department of Psychology, Harvard
I did this ages back and was really surprised at how shockingly badly I did on 2 of the tests.
Please note their "Privacy Policy" as they ask for username and email address and basic area so some people might not want to participate. There's information there on the site about who is doing the research.
It's pretty interesting!