Oh this one's near and dear to our hearts. Dumb Dads in Advertising. We love them because, for the most part, they make for amusingly funny ads. We hate them because, for the most part, all they do is mirror the "refrigerator mom" ads of the fifties and sixties. It's like a giant game of tit for tat.
Our fave has always been the Verizon Dumb Dad. The classic, clueless idiot trying to help his daughter like he's never heard of the internet before. MSNBC via AdFreak (which pulled a few of the best ads) has a round up.