Just chiming in, if you are a creative enough person you can turn just about any mentalist effect into a Derren Brown styled effect. It all depends on how you present the effect. I am pretty certain that half of the things he calls "Psychological forcing" etc. is like all good lies partially true and communicate in a way that it is more easily excepted as truth. Just my thoughts on the idea, I am quite happy with my deck of cards, markings, muscle reading and billet reading. All of which can be, more then less, found in 13 steps.