Management teams love to tout stock buyback programs as "adding shareholder value." However, as investors hopefully realize, it takes more than simply scooping up shares at any price to move the needle for shareholders. So how do you know when a company gets it right, and what's an example of one company that really gets the buyback game right? In this edition of our Ask a Fool series, Fool contributor Andrew Tonner breaks down how one company -- International Business Machines (IBM 0.05%) -- plays the buyback game better than just about anyone out there, and why, despite some recent headwinds, the company still has what it takes to achieve long-term success.