Weight Watchers is an RPG?

Clive Thompson posted an interesting article on wired today about how Weight Watchers functions exactly like an RPG. I really like the idea of turning dull, boring activities that people have trouble motivating themselves to do into games. The brilliant thing about Weight Watchers though, if it does actually function like an RPG, is that it isn't marketed as a game and most people who use it probably have no clue that they are playing one.