At the Guardian, Hilary Mantel finds Derren Brown's "Tricks of the Mind" distinctly annoying (and it provokes some very funny writing on her part; I've just got Beyond Black from the library again, I think I may quote it in a spiritualism-related review I'm working on right now, what an excellent novel):
If you see anybody with this book, go the other way. Following in the footsteps of the renowned TV illusionist, they may impress you with their super-power memory by reciting the FA Cup winners for the last 20 years: though "for real impact, it is worth stretching this to 50 years". They may spring upon you time-worn puzzles in probability theory. They may hypnotise you, and suggest you forget your name. By the time they're through, you may forget your manners - but don't expect to land a punch. Expert readers of body language, they will know the blow is coming, just by the way you clench your fist.
Derren Brown gives us fair warning: "If the techniques and thoughts in this book are new to you, there will be a tendency to be excited about them and want to show off what you have learned." If they are new to you, you are either aged nine, or a Martian.
And it only gets better....