Pleasurable anticipation

I haven't read Daniel Ariely's new book yet, but I'm looking forward to it. His paper on subjective evaluations of happiness, titled My Pain, is very atypical of economics papers, but one of the most thoughtful treatments of the problem I've ever read. His book has stirred up a lot of passionate reviews: The New Yorker loves it. The Economist's Free Exchange hates it. Tyler Cowen sides with the New Yorker. What to think? The book is in the mail.