"Conversations That Win the Complex Sale: Using Power Messaging to Create More Opportunities, Differentiate Your Solutions, and Close More Deals" by Erik Peterson and Timothy Riesterer; McGraw-Hill, 272 page
Big Idea: Challenge Bad Solutions. Most unsolvable problems are not impossible ... they just have bad solutions. Don't assume that a solution approach is a good idea just because people are throwing billions of dollars at it. Understand the real problem. Then solve that.