Heenan and Bennis believe we must look beyond the Bill Gateses of the world to understand what makes an organization excel. Written for CEOs, managers, and anyone else interested in modern organizations, this is the first comprehensive study of co-leaders and their often quiet power. Exhaustively researched and illustrated with memorable anecdotes and lively stories, Co-leaders examines a dozen great partners such as Steve Ballmer of Microsoft, Bob Lutz of Chrysler, Bill Guthridge, coach of the University of North Carolina basketball team, and Anne Sullivan Macy, Helen Keller's teacher.