U.S. News and World Report, known mostly for its essentially meaningless rankings of institutes of higher learning, is getting into the diet game. Just what you'd always hoped would happen! So, with so many fun diet trends out there, which will be No. 1? A diet that mandates you eat one lump of oats every nine and a half days and a few chocolate shavings intermittently? One that calls upon you, Gollum-like, to subsist on raw fish and fetid cave-water until bread tastes like dirt upon your greyish tongue?