Saw this website on the news last night.
http://simpsonizeme.com
Go there, input a nice headshot of yourself, fiddle with some dials and in 5-10 minutes you get a Simpsons character that looks just like you. I did my whole family and made a family portrait with photoshop.
From left to right, my Dad, my mom, my brother and myself
Just one tip, when you export your pic, make sure you save it WITH a .jpg extension, otherwise it will not be viewable on yer PC.
Have fun