I just finished a terrific book called Baseball Between the Numbers: Why Everything You Know About the Game, which looks at the game from a statistical perspective. Jonah Keri, one of my favorite Grantland writers put it together with help from other advanced stats writers like Nate Silver. It's been out since 2006 and I really wish I would have read it then. If you're the kind of person that likes statistics and advanced metrics in sports, this book is for you.
P.S. I included an Amazon link so that if anyone buys the book I will donate the proceeds to Ben's Friends.