I would like to see competitors on the biggest loser have to face 1 single hungry attack dog at the end of each show.
Each week, the slowest (and presumably fattest) person would be mauled mercilessly.
By week 11 or 12, the dog would have a hellacious taste for blood, but I think the competitors would have adapted too. They would run fast, zig-zag, push other competitors to the dog, or create weapons to kill the dog before it can maul them.
I think I would watch that, yes.