LYNBROOK - The Giants are set to take on the defending Super Bowl champion Green Bay Packers this Sunday, and fan fever is catching on all across Long Island.The Sgambati family, which owns Lynbrook Bagels in Lynbrook, is selling blue bagels to honor Big Blue. The family says it has been rolling out the blue dough ever since the Giants won their last Super Bowl four years ago. The divisional playoff game is set to kick off at 4:30 p.m. on Sunday at Lambeau Field in Wisconsin.