Midnight's when the real show starts, when this slick-haired pitchman dominates the screen of your combo TV/VCR, selling youth serums and exercise equipment. Bedecked with Damson-plum pocket squares or green-tobacco tank tops, he's got undeniable magnetism and bold confidence. But wait, there's more. He struts the stage with brown-sugar suaveness. Espresso-bean enthusiasm. Blueberry cobbler authenticity. Slinging silky turns of phrase that are proven-that's right-proven to deliver the goods. It doesn't matter what he's selling, in your sleepy haze, you need it. And operators are standing by.