It's still a couple of weeks before new judges Steven Tyler and Jennifer Lopez show up on Fox's American Idol, and before Piers Morgan, familiar as both a judge on NBC's America's Got Talent and a winner of the same network's Celebrity Apprentice, fills Larry King's interview chair on CNN. But another familiar TV judge can be judged tonight at 8 ET on CBS, when the new Live to Dance series showcases, yes, Paula Abdul...