TV Ratings: Thursday (12/6/07)

In their final head-to-head battle this year, all-new episodes of Thursday night blockbusters "CSI: Crime Scene Investigation" and "Grey's Anatomy" reigned supreme, splitting leadership in total viewers and adults 18-49.

The 300th episode of NBC's veteran medical drama "ER" failed to score any extraordinary ratings, finishing last in the timeslot with a little over 8 million viewers.

ABC's 'Ugly Betty' also appears to have softened considerably year-to-year. Last year a repeat of the show scored 8.73 million viewers. This year even Betty White couldn't help break the 10 million mark for an all-new episode.

An all-new "Grey's Anatomy" failed to match its season average of 19.7 million viewers. One year ago, on a comparable evening in late November, the show scored a much heftier 24.27 million viewers.

ABC:
8:00pm Ugly Betty (9.34 million)
9:00pm Grey's Anatomy (17.64 million)
10:02pm Barbara Walters Special (11.67 million)

CBS:
8:00pm Survivor: China (14.05 million)
9:00pm CSI (18.66 million)
10:00pm Without a Trace (12.66 million)

NBC:
8:00pm My Name Is Earl (7.39 million)
8:30pm 30 Rock (5.78 million)
9:00pm The Office (R) (4.99 million)
9:31pm Scrubs (4.86 million)
10:01pm ER: 300th episode (8.12 million)

Fox:
8:00pm Are You Smarter Than a 5th Grader? (8.72 million)
9:00pm Don't Forget the Lyrics! (6.71 million)

CW:
8:00pm Smallville (R) (2.81 million)
9:00pm Supernatural (R) (2.04 million)

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