Led by the usual assortment of forensic dramas and the season's final four hours of "Survivor: Vanuatu," CBS scored an easy ratings win for the week ending Sunday, Dec. 12. Given CBS' huge margin of victory, the race for second place, where ABC and NBC are neck-and-neck, is vastly more compelling.

Overall, CBS averaged an 8.3 rating/13 share, pulling in 13.09 million viewers per night. No other network was close. ABC grabbed second for the frame with a 6.7/11 and 10.28 million viewers, dropping rerun-dependent NBC into third with a 6.5/10 and 9.62 million. FOX stayed fourth with a 4.5/7 and 7.03 million viewers, but at least the network is only another month away from another life-saving installment of "American Idol." UPN was fifth with a 2.3/4 and 3.29 million viewers, leaving The WB in last with a 2.0/3 and 3.13 million.

CBS also won the all-important demographic of adults 18-49, doing a 4.3 rating. ABC had a 3.7 rating, again knocking NBC into third with a 3.5 rating. FOX was a competitive third with a 3.0 rating, followed by UPN's 1.4 rating and the 1.3 rating for The WB.

Few people will be shocked to learn the television's most watched show was CBS' "CSI: Crime Scene Investigation," which drew 29.83 million viewers on Thursday night, doing a 18.4/28 and boosting the fortunes of "Without a Trace" at No. 3 with a 13.0.21. Thursday also saw the penultimate episode of "Survivor: Vanuatu" do an 11.7/18 for No. 5. Sunday's two-hour finale of Mark Burnett's reality franchise was tied for No. 7 with a 10.9/16 and the subsequent live reunion show was No. 17 with a 9.0, joining "60 Minutes" (8.9/15, 18th) in a strong night.

CBS also got Top 20 performances out Monday's "CSI: Miami" (10.6/17, 11th), "Everybody Loves Raymond" (9.8/14, 13th) and "Two and a Half Men" (9.1/13, 16th) as well as Tuesday's "Navy NCIS" (9.5/15, 14th).

Even facing the well-received "Survivor" finale on Sunday, ABC's Golden Globe nominated hit "Desperate Housewives" scored with a 13.5/19 to rank as the week's No. 2 show. Sunday's "Extreme Makeover: Home Edition" was also in the hunt with an 8.7/13 for No. 19. The network's Wednesday was particularly strong, with "Lost" earning an 11.4/18 for No. 6, followed closely by the network's Barbara Walters special, which tied for No. 7 with a 10.9/16. The "Monday Night Football" matchup between the Cowboys and Seahawks was also in that No. 7 with a 10.9/18.

Thursday's "E.R." (12.2/20, 4th) and "The Apprentice 2" (10.5/16, 12th) paced NBC along with the Dick Wolf dramas "Law & Order" (10.7/17, 10th) and "Law & Order: Special Victims Unit" (9.3/15, 15th).

FOX's Sunday NFL postgame was No. 20 for the frame with an 8.5/14, while the network's best scripted option was "The Simpsons" at No. 39 with a 6.3/10.

The next-to-last episode of UPN's "America's Next Top Model" was No. 74 with a 3.6/6 and The WB's leading program was Reba at No. 81 with a 2.9/5.

Just when it looked like things couldn't get any worse for The WB's "The Mountain," the show's ratings found a new nadir. Even if the New York Post insists that the snow-bound drama is a "word-of-mouth hit," its actual ratings reached personal lows with a 0.9/1, the least watched show on the six networks by a good (or bad) amount.