Fox clobbered its network rivals with a knock-out one-two punch Tuesday night by combining American Idol with House. The result: an enormous 19.3 rating and a 28 share for Idol (33.29 million viewers) followed by a 17.1/25 rating (27.75 million viewers) for House. For the most part, the other networks simply threw in the towel, programming a slew of repeats against Fox's juggernaut. Nevertheless, CBS's NCIS, one of the few shows that has been able to produce solid ratings against Idol, turned in a strong 8.2/12 against the talent contest Tuesday night. On the other hand, NBC brought Dateline's "To Catch a Predator" series back with little effect. The show, which lures predators to a hidden-camera-bedecked home where they expect to meet sexually active teens, scored only a 4.6/7.