The first book I finished in 2010 is Justice: What's the Right Thing to Do? by Michael J. Sandel. It's a great book to learn more about the ideas set forth by some of history's greatest philosophers, from Aristotle to Kant.
It's written by a Harvard professor so it sometimes reads like a lecture. But the book accomplished something that's hard to do in our polarized society: It forced me to seriously reconsider some of my core philosophies and beliefs. Like the role of religion in public discourse and even the role of morals in discussions about issues like abortion. I've seriously changed my attitudes because of this book.
I'm adopting a three tier rating system for my mini book reviews. Read it is an enthusiastic endorsement which means I recommend the book. Nothing better to do means it's a worthwhile book but only if you have nothing better to do. And burn it (no I don't condone the burning of books but it makes for a great rating system) means I wouldn't suggest wasting your time.
The rating for Justice: Read it!