It's New! It's Improved! It's Terrible!What happens when a commercial steps out of your TV set and into your life? The ads on TV said the basketball shoes were New! IMPROVED! Amazing! NEAT! Arnold Schlemp just had to have them. He had to. That was all there was to it. But by the end of his birthday he had a lot more to handle than fancy new shoes. He had big red blisters on his feet. He had a broken TV set in the living room. He had an obnoxious kid who had come through the TV screen from