The powerful, researched questions, the light-hearted way it is written and the sheer USEFULNESS of this book make it my #1 this year. So many managers struggle with asking clear, high-gain, open questions. These ones are beauties and you don't need to read through a whole lot of filler material to get to the good stuff. It's all good.
I will be referencing Michael's book in any workshop I run that is even vaguely related to coaching. I'll be using the questions every day - at work and at home.