BeFunky is a web tool that allows you to cartoonize the photo that you upload. It is currently in private beta therefore you will need to get an invitation first. Just enter your email address and follow the instructions in the email that you will receive. It took me one or two days to get my invite but it was worth it. BeFunky is a nice tool that you may want to play around with.
So, how accurate do you think my initial sketch (photo below) was?
[Via Somewhat Frank]