America may still be able to fall asleep watching Jay Leno. His 10 p.m. premiere showing on NBC Monday night was a showcase for bad television and an embarrassment for a network trying so hard to create a marketing "event" that it forgot Leno's talents: A powerful gimmick in the variety show/talk show toolbox is real or illusionary spontaneity, not a video screen featuring a "surprise" appearance by Oprah Winfrey. God, that was painful...