Caricatures

I have decided that my interactive fable will be made up of caricatures, so been searching the internet for examples. Need to develop cartoons of Bush, Blair (who will appear in the shape of a dog) Sadam Hussein. In this image the artist has used the dodge tool depict highlights. Think this technique can be very effective, but not quite the comic book look i'm going for. Line quality also appears to be very important, usually determined during the inking stages. This picture appears to be outlined with a uniform stroke, with the pen tool in Illustrator or Photoshop.