Lena Headey in Terminator: The Sarah Connor Chronicles by Jill Greenberg/Fox Lena Headey in Terminator: The Sarah Connor Chronicles by Jill Greenberg/Fox

Fox will preview the first episode of Terminator: The Sarah Connor Chronicles on Yahoo! for a 24-hour period beginning Friday at midnight ET, on Yahoo!.... E! has greenlit a second season of the late-night talker Chelsea Lately, to begin airing Monday (talk about cutting it close).... Biggest Loser champ Bill Garmanakos and his twin Jim rang the opening bell at the New York Stock Exchange Thursday morning.... ABC Family's annual "25 Days of Christmas" event delivered its best-ever ratings, with an average of 2.64 million viewers tuning in for some part of the programming. The Dec. 9 TV-movie Holiday in Handcuffs (6.99 mil viewers) was the cabler's highest-rated program of all time.