Central Falls police Sergeant Derrick Levasseur is the winner of the latest season of the CBS reality show Big Brother.  Levasseur was selected by a jury in the season finale last night and was awarded the 500-thousand-dollar grand prize.  The long running show forces strangers to live together inside a home, with no contact with the outside world at all.  Levasseur never let on to his housemates that he's a cop, instead telling them he is the city parks and recreation director.