One in five U.S. broadband households intends to purchase a new flat-panel TV before the end of 2011, making it the most popular CE product this holiday season, according to new consumer research from Parks Associates. Among households intending to purchase a flat-panel TV, 73% plan to select a set with advanced features such as 3D capabilities or built-in Internet connectivity, but the demand for smart TVs is nearly twice the demand for 3DTVs.