I took an advertising course in college. The prof gave us an assignment to make a radio or tv commercial on any product we chose. He was an old school guy, who told us that the rules of advertising hadn't really changed since the Clark Gable movie, The Hucksters, came out especially when it comes to "funny" ads. He said funny ads don't work. People may laugh at the commercial, but they won't be persuaded to buy the product by comedy. And his next thought stuck with me. People may remember the humor, but they won't remember the product that...