'CSI: Crime Scene Investigation' is, as usual, the night's most watched show

Fast National ratings for Thursday, Nov. 20, 2008.

Although "Grey's Anatomy" still delivered the night's highest demo ratings, CBS had no problems sweeping Thursday in overall measures.

CBS averaged an 8.6 rating/14 share overall for the night, far ahead of ABC's 6.9/11 and the 4.8/8 for NBC. FOX had a 2.8/4 to narrowly beat the 2.7/4 for The CW in fifth.

Among adults 18-49, CBS did a 3.9 rating to nip ABC's 3.7 rating in the key demographic. NBC's 3.3 was good for third, followed by FOX's 1.9 rating and the 1.8 rating for The CW.

"Survivor: Gabon" started CBS off in first, doing a 7.6/12. ABC's "Ugly Betty" was second with a 5.4/9. NBC's "My Name Is Earl" and "Kath & Kim" held third, barely beating the 2.9/5 posted by both The CW's "Smallville" and FOX's "Kitchen Nightmares."

At 9 p.m. CBS' "CSI: Crime Scene Investigation" won the hour with an 11.3/17, holding off the 10.0/15 for ABC's "Grey's Anatomy." NBC's "The Office" (4.9/7) and "30 Rock" (4.4/7) were third, beating FOX's "Kitchen Nightmares." On The CW, "Supernatural" had a 2.4/4.

"Eleventh Hour" completed the CBS sweep at 10 p.m. with a 7.0/12. NBC's "ER" had a 5.9/10, leaving ABC's "Life on Mars" in last with a 5.3/9.

Ratings information is taken from fast national data, which includes live and same-day DVR viewing. All numbers are preliminary and subject to change.