In an unexpected twist, TVs are topping many Christmas shopping lists this year. Wal-Mart says TVs are among the top gifts people are putting on layaway at its 3,000-plus U.S. stores during the holiday season. The Westinghouse 46-inch LCD HDTV that was on sale for half off at Target for $298 was a top seller during the start to the season last weekend. And Abt Electronics already has sold out of 55-inch Samsung LED TVs that were marked down by half to $1,099.