Brrr! Even South Florida gets cold in the winter. And in a holiday season when so many of us are out of work and have time to kill, the stars have aligned for one very peculiar product -- or are there two?Surely you've seen the infomercial for "The Snuggie -- the Blanket with Sleeves!" which has been invading television sets around the nation this past month. Turn on the tube, and soon enough, you'll hear the infectious jingle: "Blankets are OK/ but they can slip and slide/ something something y