Antifragile: Things That Gain from Disorder (Incerto, Band 3)
Kanban: Successful Evolutionary Change for Your Technology Business The required classic on what we're doing.
Kanban: Evolutionäres Change Management für IT-Organisationen The German translation by Arne and Henning, incl. chapter by Markus
Toyota Kata: Managing People for Improvement, Adaptiveness and Superior Results Helps to really understand the difference between kanban and Kanban and what the underlying culture of continuous change is all about and how to get there.
The Principles of Product Development Flow: Second Generation Lean Product Development
The Leader's Guide to Radical Management: Reinventing the Workplace for the 21st Century A great business view on the required change in corporate culture.
The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses The new kid on the blog with an application of Lean to Startups and any product company in uncertain terrain.
Gemba Walks A great book with focus on respect for the people on the Gemba
Personal Kanban: Mapping Work | Navigating Life An application of Kanban to the field of personal organization by a close friend of Davis.
Brain Rules: 12 Principles for Surviving and Thriving at Work, Home, and School Not really Lean but good background on parts of the psychology of Lean, Kanban and ... well, common sense
Thinking, Fast and Slow On how we really make decisions. Partly counter intuitive but great source of insight.