I picked up this book on a recommendation from the Globe and Mail. It is an easy but thought provoking read. Let's face it, the title isn't the sexiest, nor is its cover... but it is written in an easy and engaging style and supported by compelling evidence. Furthermore, it is has a broad appeal -- do you want to be more productive? Calmer? Do you want to be a better parent or be more supportive to a child? For everyone who struggle with one's weight, this books explains that loosing weight isnt' always about 
willpower, and instead gives clinical proof of best practises. Yes, it was a thoroughly enjoyable book and I'm sure I will refer to it again in the future.Coincidently, I heard Jonah Lehrer speak recently -- amazing guy, may I add -- I have a bit of a crush on him, actually! After his talk I bought his recent book, How We Decide. Again, it may not be the most compelling topic, but it is very interesting and compliments Willpower nicely.
As a side note, I'm re-reading Life of Pi. Actually, I'm listening to it on CD after reading it the year it was published. It is such a wonderful book . I'm enjoying the best of both worlds these days. :-)