Left: screen grab, Right: Jacques Coughlin, NPR
My lame attempt to "sketch" myself with Ultimate Flash Face, compared to what I actually look like.
This site is oddly addictive. You don't exactly sketch anyone, but the end result is a professional looking sketch. Pick a hairstyle, then make it wider or taller. Next, the eyes, eyebrows, nose, mouth, face, beard, etc, etc. Every step is customizable. I tried to copy several people in the office, and then tried a self-sketch. If you have some time to kill, click here for the Ultimate Flash Face.