I stumbled across this today, it is an online face builder. You can build a black and white face using a Flash interface. It took me about five minutes to build a poor representation of myself, but it seems that if you spent enough time you could make a really good representation of your face on here.

http://flashface.ctapt.de/

Also, you can save your "face" so that others can see it. Very cool!

 

I created my face, saved under Darren1976_1