The Mole - Season 1 Episode 7 Part the Seventh

The players divide into "arty" and "counting" groups and then participate in games in which they herd sheep or create a piece art designed to fool a critic. The sheep-herding group is given a choice of three dogs, with only one trained to herd sheep. They can earn $20,000 for herding them, and an additional $10,000 for counting them. What they don't know is that they've already been told the number of sheep. The players then are asked to challenging tasks, such as facing knife-throwing and fire-walking. The tasks are on a tiered-structure, with varying results worth exemptions and/or cash. The participating players are blindfolded, while another has to convince them to complete their tasks. This player is the only one who knows the truth about their tasks: that they only think they're doing something potentially dangerous.