I got this for Christmas because I complained about how I kept offending people without meaning to. Some friends said I just need to read body language better and got me this book.
So far, I think it's awesome. Granted, it makes us all sound like dumb apes the way it describes all the body language we perform based on instinct and base emotions, but I can't remember all the times I went, "Wow, I never noticed that before, but it's true!". Since reading it, I've been paying a lot more attention to the signs and signals given off by my co-workers and it's amazing what I can read without them even knowing.