Two contestants, one pot of money to win.
A British gameshow called "Golden Balls" invites contestants to play a version of the Prisoner's Dilemma, wherein the two contestants have to decide whether they're going to "split" or "steal" a pot of money.
If they both opt to split, they split the money. If one opts to split, and one opts to steal, the one who steals it gets the whole pot. And if they both opt to steal it, then neither get the money.Prisoner's Dilemma is a classic game from game theory. What happens next? You've got to watch this.