Australian reality star David Genat wins record $5.8 million on "Deal or No Deal Island."

Australian reality star David Genat won a record $5.8 million on "Deal or No Deal Island," beating the largest prize in US reality TV history. Known for his Survivor win, Genat chose case 18, a number significant in his life, and turned down several high offers to secure the top prize. He plans to use the money for his family and personal interests.