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Katherine Heigl, Jeffery Dean Morgan, Grey's Anatomy


The chick magnet still has it. The guest-star thing still isn't working for Tina Fey.

Last night's Grey's Anatomy dominated among women and adults 18-49, Nielsen estimates said. Overall, the episode, featuring another curious appearance by Izzie's dearly beloved—and dead—Denny, scored with 15.7 million, up nearly a 1million from last week.

30 Rock's latest foray into Will & Grace territory—Steve Martin was this week's stunt guest, after Oprah Winfrey and Jennifer Aniston—recorded the show's lastest down week (7.3 million). 

The return of Toby to The Office was greeted by 8.4 million, up a tick from last week. The show was NBC's biggest comedy in viewers and adults 18-49. 

With ABC on a cancellation binge, Life on Mars (8 million) did well to stay even with last week. But it still ran third in the demo behind ER (9.1 million overall) and Eleventh Hour (10.7 million overall).

CSI did its thing—it got killed in the key demos by Grey's, but won the night in viewers (18.4 million, down from last week).