The Giver by Lois Lowry
What a great book! Targeted at young adults, it's about a young boy in a utopian society. This is, I think, the third time I've read it (for a book club this time), and it was still good. Some of the surprises were still chilling and horrific, even when I knew what was coming, or maybe partly because I did know what was coming.
There are apparently a couple of companion books to this one, not exactly sequels but somehow associated. They are Messenger and Gathering Blue. I'm looking forward to reading them, especially after an article in Reason magazine recently, which was about children's literature with libertarian themes.