Shares of CBS Corp. may be way down in the overall market slump -- they had dropped 4.30 percent at midday trading today (Wednesday) -- but the company's Nielsen ratings have rarely risen higher this year than they did last week. CBS captured four of the top-five programs, including No. 1, Csi Crime Scene Investigation , which drew 23.5 million, and, for the first time, beat ABC rival Grey's Anatomy among adults 18-49. In fact, CBS, often regarded as the old-folks network, drew more younger viewers than any other network last week. ABC managed to provide some solid competition with Dancing With The Stars and its new sci-fi drama Life on Mars , but NBC continued to trail, failing to place a single show in the top ten. (It's highest-rated program was Sunday Night Football, which came in at No. 13.) For the week, CBS averaged a 6.9 rating and an 11 share. ABC placed second with a 6.3/10. Fox placed third with a 5.0/8, while NBC trailed with a 4.4/7.  

The top ten shows of the week according to Nielsen Research 1. CSI Crime Scene Investigation, CBS, 13.9/21; 2. Dancing With the Stars (Monday), ABC, 12.0/18; 3. Criminal Minds, CBS, 10.2/16; 4. CSI NY, CBS, 10.1/17; 4. NCIS , CBS, 10.1/15; 6. Dancing With the Stars (Tuesday), ABC, 10.0/15; 7. Desperate Housewives, ABC, 9.8/15; 7. Grey's Anatomy, ABC, 9.8/15; 9. CSI Miami, CBS, 9.2/15; 10. The OT, Fox, 9.0/15.