NBC, which showed off some muscle during the summer and then made a grand entrance into the new season with its new Jay Leno Show, Sunday Night Football, and the wind-up of America's Got Talent, was back on the injured list again last week. Only football made any kind of showing for the network in the ratings, placing second in overall households and viewers (the pregame show placed eighth) and first among adults 18-49. But that was all she wrote. Otherwise, not a single NBC show appeared among the top 25 programs of the week. And Leno's numbers had dropped to where they had been when he hosted the Tonight show -- and are still dropping. CBS, on the other hand, remained the powerhouse it had been last season, with its long-running NCIS placing first in the ratings for the second consecutive week and its spinoff, NCIS Los Angeles placing third behind NBC's football telecast. The network also experienced a ratings bonanza during the post-primetime period as David Letterman's Late Show trounced Conan O'Brien's Tonight show as Letterman became involved in a headline-making scandal. (Nevertheless a new Rasmussen Reports survey released Tuesday indicated that 29 percent of TV viewers say that they are less likely to watch Letterman's show as a result of the TV host's admissiions.) Among the nightly newscasts, NBC Nightly News with Brian Williams remained in front with 8.31 million viewers. ABC World News remained second with 7.65 million viewers. CBS Evening News with Katie Couric remained well behind with 5.69 million viewers. Overall for the week, CBS averaged a 7.2 rating and a 12 share. ABC placed second with a 6.2/10. NBC was a distant third with a 4.9/8, edging out Fox with a 4.5/7.

The top ten shows of the week according to Nielsen Research 1. NCIS, CBS, 12.9/21; 2. Sunday Night Football, NBC, 11/18; 3. NCIS Los Angeles , CBS, 10.6/16; 4. Dancing With The Stars, ABC, 11.1/17; 5. Csi Crime Scene Investigation, CBS, 9.9/16; 6. The Mentalist, CBS, 10.1/17; 7. Grey's Anatomy , ABC, 9.9/16; 8. Sunday Night NFL Pre-Kickoff, NBC, 8.7/14; 9. House , Fox, 8.5/13; 10. Desperate Housewives , ABC, 9.2/14.