It's a genius idea in these energy-deficient times: carrier pigeons as mail couriers. Smart thinking. But "what about the big stuff?," asks the boss. This is where the ad turns into a mini-disaster flick. Giant pigeons drop packages on the populace below, peck at trucks, and shed windshield-size feathers. It's a witty commercial, made all the better for the directors' decision to stay away from the obvious bird crap joke.