I bought this book (and 59 seconds) after seeing Richard Wiseman on the Uncaged Monkeys tour.
This is the first book of his that I've read, and the first I've read on this sort of subject. I'm about half-way through now, and it's a very interesting read so far. Everything is explained clearly and is easy to follow, without getting too in-depth; and it doesn't require any prior knowledge or reading.
Looking at other reviews, I can see that if you've read a lot of his material or other books on this subject, then perhaps this book is more of an 'easy-reader'; but as first-time reader, I'm enjoying this book.