Don''t they pretty much do that with Biggest Loser? They have the stay at home mom, single mom/dad, all-around mom/dad, single guy/woman, black guy/woman, latino woman/man, young woman/man, grandparent, and I think they've had queer people on there too. Of course, once they are out of that controlled environment, they gain most of the weight back and it is the shows fault... instead of, you know, the fact that they don't have 8 hours a day to work out (nobodys fault really, but the excess exercise at first is to take off that excess weight) and that they start eating too much (they might have a lower metabolism now and need less calories, but that's their fault for eating too much to begin with)