I feel that cartoons are one of the most misused and misunderstood styles in the design world. A good cartoon can effectively exaggerate the emotion or feeling that the client is trying to convey to their customer and provides a visual "jingle" that's hard to forget. Likewise, caricatures can take the most dry topic and make it enjoyable and thought-provoking, which is why they've become the style of choice for political cartoons and editorial satire.