I am reading Superfreakonomics now. Very slowly. It's been two weeks and I haven't even reached the controversial global cooling chapter.
Somehow I don't find the book a page turner; perhaps because I found out that reading the original journal articles behind all of those anecdotes are more interesting. Those articles might not be as entertaining and have definitive finding as the book suggest (and oh, the math, too); but it is actually nice to see how those article's authors use their creativity (and hard work) trying to make interesting (and robust) case based on data.
Nevertheless, the book still serves a good entry point to those cute economic papers. Of course, you may have different opinion.