When ABC's 20/20 produced a recent segment on restaurants, its people called Kansas City's David Hayden, a man who claims to have waited on more tables in his 20-year career than McDonald's has sold Big Macs. Of course, with Hayden, it's not about volume. He seems able to remember all those tables. Service isn't a job for him but a faith, so to say he's polished and professional hardly tells the story. Hayden tells his own stories anyway — he's an engaging storyteller and has written and published a training manual for service-industry employees. He also consults on training and builds websites for restaurants, making him a triple threat, the server of yesterday, today and tomorrow.