In all the years I've been watching competitive reality shows (and that number is 13 or so), I've never seen an instance where it worked out well, in terms of making a good game or a good show. I suppose this is less egregious than allowing an entire bloc of previous players another chance to win the game against a group of fresh meat (as in Big Brother 2011), but not by much. I still remember the acrimony from Survivor: Pearl Islands, when the six Outcasts got a chance to play for the right to re-enter the game. They weren't guaranteed a spot, but each tribe they beat in a jailbreak challenge would take on one Outcast. And it was nasty, all-up. Bad TV. I just don't see what Biggest Loser gains in this, besides headlines and ink. Maybe that's enough.