The "No-Lose-Formula For Creating A Commercial Everyone Will Love" is simple: Use a baby, or an animal.

Babies work especially well if they: a) Talk. b) Sing. c) Dance. Regarding animals, dogs are preferred. However, chimps, baboons, guerrillas, lizards, mice, frogs, pigs, cats, chickens, rabbits, squirrels, raccoons, goldfish, ostriches, any kind of bear, and elephants are all acceptable. Avoid snakes and insects. And, as with babies, talking, singing or dancing is highly recommended.