People's reactions to Derren Brown are always highly illuminating and say a huge amount about them. I've made a bit of a study of Brown's career and most people's expectations end any hope of them seeing the reality even when it's highlighted. If you read his book, it's always obvious what he's doing but despite him explaining carefully what's happening, people don't want to believe the truth. It's as though they've invested so much in "magic" and "ESP" that even when reality is revealed, they won't accept it. More power to Brown's elbow and this man will, if he's not destroyed by the gullible outraged hordes baying for blood (see some of the scurillous garbage in the papers this week for proof of that one), go on to show us an enormous amount about primitive selves. Accept it for what it is and if you don't want your superstitions shipwrecked, don't watch him.