The Enterprise and Scrum
The Enterprise and Scrum by Ken Schwaber
On of my coworkers won this as a prize at the IndyTechFest. We were all very intrigued by the Kanban talk that was given there and so I wanted to learn more about using lean development techniques in business.
I found that this book helped me understand more about scrum and how it can improve my development capabilities.
It's a pretty quick read that you can do in a few nights at home but well worth it to learn more about lean.