Just to put my initial vote in, this is one of my favorite books since the APG. I really like that this is a roleplaying book versus a rules book. I think I may be in the minority (particularly on the boards, which is why I rarely post), but having information on how characters think and why they would act a certain way makes it so much more real and fun to me.
I do hate Teamwork Feats, but that isn't enough for me dislike the book, they are such a small part.