Have you read--not just heard of but read--any books by Patrick Lencioni? If so, what's your opinion?

Patrick Lencioni’s books include the best-seller The Five Dysfunctions of a Team. Told as a fable of business life, it exposes counterproductive behaviors in the workplace and explains what must happen for a group to work effectively as a team.

If you’ve read any of his books and have opinions about them, I’m interested. Please share.

I’m especially interested in knowing if you our your managers at work have ever been assigned a book of his to read and whether you think it made any difference.