Wednesday's ratings rundown:
American Idol — which had better provide daycare in Hollywood! — led the pack with nearly 27 million total viewers, a week-to-week gain of 1.57 mil. Katie Couric's prime-time news foray drew 6.45 mil. Knight Rider revved up 22 percent to deliver 6.13 mil, its biggest audience since Oct. 22.
Bolstered by its Idol lead-in, the nonetheless entertaining Lie to Me led with 12.11 million viewers, down a mil from its premiere. Lost was No. 1 in demos and drew 11.07 million, dipping just 300K from its season opener.
Trailing a CSI: NY repeat, Law & Order delivered 8.89 million viewers, up 500K. Life on Mars returned to an audience of 6.5 mil, down 18 percent from its ages-ago last fresh episode.