Actor and film producer Kevin Costner has become an unlikely hero of the Gulf oil leak disaster. Costner has a company that produces machines that separate oil from water using a centrifuge system. BP has purchased 32 of the machines. Three of the machines are expected to be deployed and working this weekend, with the rest in operation within the next sixty days. The machines, built by Costner's company Ocean Therapy Inc, are designed to purify two hundred thousand gallons of water each day of operation. Costner spent seventeen years and twenty million dollars of his own money developing the...