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This one is interesting, I picked it mainly, because another book I liked had references to it and overall the title sounded promising to me. Bonus here, this is one of these books, that start with a story and you can accompany the protagonists on their way to solve the problems. I couldn't put the book away and the examples, although they are geared towards executive levels of management, match perfectly to my overall experience with working teams. So even after I was finished, I still had to think about many things. I'd say this is a good outcome for any book. :)

The Five Dysfunctions of a Team
The Five Dysfunctions of a Teamvon Patrick M. LencioniJohn Wiley & Sons