I just joined a slimming club at work.
We are all doing different diets/methods, but will meet every Friday morning for a weigh-in, to see how we're all getting on and support each other. Everyone chips in 50p a week, and the person who's lost the most weight that week gets all the money... probably around £10.

Not sure if it will really help me, but it can't hurt.
Anyone else do something like this?