LOS ANGELES (Hollywood Reporter) - Jack Bauer‘s latest marathon workday got off to a good start Sunday, ratings-wise. The Fox drama "24" notched its most-watched episode ever with its fifth-season premiere as the first of two back-to-back episodes got a boost from a primetime overrun (in East Coast and Midwestern markets) of the NFL‘s NFC divisional playoff game between the Carolina Panthers and Chicago Bears. Airing from about 8:13-9:11 p.m. EST, the first episode of "24" averaged 17 million viewers and a 7.3 rating in the adults 18-49 demographic (demographic share data for Sunday were not available Monday because of...