Graphic: Inside the Sketchbooks of the World’s Great Graphic Designers

I recently saw this book on Amazon and it caught my eye. It’s called Graphic: Inside the Sketchbooks of the World’s Great Graphic Designers. I’m pretty intrigued and am thinking about purchasing it at the end of the month. The reviews on Amazon and this blog post give you a glimpse as to what’s inside. What do you think? Anyone have this book?