A lot can happen in 30 seconds. In the case of the shoot-out at the O.K. Corral, 30 seconds found three men dead, left two men wounded and ultimately captured the imagination of generations of Americans. Wyatt Earp, an against-all-odds hero who was literally the last man standing; Doc Holliday, Earp's unlikely crony; the tragic tale of the Earp family--all of these elements make the story of the O.K. Corral irresistible to a great many people...