I think it’s worth pulling together a list of essential books that I think should be required reading for people on Lean & open source teams (like mine):

• Basis for the team values that we practice: The Five Dysfunctions of a Team: A Leadership Fable Patrick Lencioni (amazon)
• This is a foundational classic for team building:  Peopleware: Productive Projects and Teams (Second Edition) Tom DeMarco (amazon)
• This novel is good primer for lean and devops The Phoenix Project: A Novel About IT, DevOps, and Helping Your Business Win Gene Kim and George Spafford & Kevin Behr (amazon)
• Business Focus on Lean: The Lean Startup: How Today’s Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses Eric Ries (amazon)
• Foundational (and easy) reading about Lean: The Goal: A Process of Ongoing Improvement Eliyahu M. Goldratt (amazon)
• One of my favorites on Lean / Agile: Implementing Lean Software Development: From Concept to Cash Mary Poppendieck (amazon)
• Should be required reading for open source (as close to “Open Source for Dummies as you can get): The Cathedral & the Bazaar: Musings on Linux and Open Source by an Accidental Revolutionary Eric S. Raymond (amazon)
• Culture Change Liquid Leadership: From Woodstock to Wikipedia–Multigenerational Management Ideas That Are Changing the Way We Run Things Brad Szollose (amazon)
• More Team Building – this one is INTERACTIVE! http://www.strengthsfinder.com/home.aspx

There are some notable additions, but I think this is enough for now.  I’m always looking for recommendations!  Please post your favorites in the comments!