The County Line barbecue joint in Austin is buzzing at lunchtime -- you can smell the charred red meat half a mile away. Way in the back corner, Don Yacktman is enjoying his usual: a plate of lean brisket, peppered turkey breast, potato salad, and baked beans. He's surrounded by a gaggle of local bankers who are pitching him on services he doesn't need and eagerly asking him questions. How does he beat the market? What's his secret?