Just two days ago I started listening to this audio book by Steven D. Levitt and Stephen J. Dubner. I must say it is very enjoyable! I likened it to watching a t.v. show as it is that entertaining.
Being that I never studied much economics in my formal education (welcome to 99% of the population!), I have begun to study this subject over the last 6 months, roughly. And that is what brought me to Freakonomics. I merely wanted to expand my horizons on economics. This book is not so much what I expected, but certainly one of those fortunate "mistakes." It poses certain questions such as, why do drug dealers still live with their mothers? How are sumo wrestlers and school teachers alike?
With only about 20% of the book to finish, the real formal economics lessons ceased after the introduction and since then has essentially been learning-in-disguise. I will definitely be listening to this again for the interesting lessons it covers and how it further shows just how predictable human behavior can be.