Fast National ratings for Tuesday, Oct. 6, 2009.

While CBS' Tuesday drama juggernaut continued to role, a slight dip in "NCIS: Los Angeles" ratings allowed a rival network to claim an hour in the key demographic. CBS is still probably pretty satisfied.

Among adults 18-49, CBS averaged a 3.6 rating for the night, topping NBC's 3.1 rating and the 2.8 rating for FOX. ABC's 2.0 rating was well back in fourth, while The CW's 1.0 rating trailed.

Overall, CBS averaged an estimated 16.45 million viewers to go with a 10.4 rating/17 share. ABC was a distant second with a 5.6/9, with NBC's 5.0/8 close behind. FOX's 3.7/6 and the 1.4/2 for The CW brought up the rear.

In the 8 p.m. hour, CBS' "NCIS" averaged a 12.2/19 and a 4.2 rating in the key demo, but this will be the first time this season that "NCIS" didn't hit series highs in total viewers. NBC's "Biggest Loser" was second with a 5.2/8. FOX's "Hell's Kitchen" was third with a 4.1/7, just in front of ABC's "Shark Tank." The CW's "90210" had a 1.6/3 overall and a 1.2 rating in the 18-49 demo.

CBS stayed in first at 10 p.m. with the 10.1/16 for "NCIS: Los Angeles," which was down over a million viewers from last week. ABC's "Dancing with the Stars" was second with a 7.9/12. NBC's "Biggest Loser" had a 5.8/9 overall and had a 3.9 demo rating to beat the 3.6 rating for CBS' drama. FOX's "So You Think You Can Dance" was fifth with a 3.3/5. The CW's "Melrose Place" was up over last week, but by so little it might as well be a statistical hiccup.

"The Good Wife" had an 8.7/15 in the 10 p.m. hour, nearly identical to last week, though it slipped a tiny bit in the 18-49 demo to a 2.9 rating. ABC's "The Forgotten" had a 5.2/9, up a smidge over last week, though it still lost the 18-49 demo to NBC's "The Jay Leno Show," which averaged nearly 6.2 million viewers overall.

 

All ratings information comes from preliminary Fast National Nielsen data, which includes live and same-day DVR viewing. All numbers are subject to change.