Fast National ratings for Tuesday, Dec. 30, 2008.

While older viewers were perfectly content to watch CBS' broadcast of the latest Kennedy Center Honors ceremony, younger viewers went scurrying to NBC, leading to a Tuesday night split.

In the key 18-49 demographic, NBC averaged a 2.3 rating, nipping the 2.1 rating for CBS. FOX's 1.8 rating and the 1.5 rating for ABC followed. The CW was fifth with a 0.4 rating.

Overall, though, CBS averaged just under 11.5 million viewers and dominated the night with a 7.1/12. NBC was second with a 5.2/9, with FOX in a distant third with a 3.4/6. ABC's 2.6/4 was fourth, beating the 0.8/1 for The CW.

CBS swept the primetime hours overall, starting at 8 p.m. with an 8.1/13 for "NCIS," making it the night's top program. NBC's "Law & Order" and FOX's "House" tied for second with a 3.7/6. ABC took third with a 3.2/5 for New Year's specials featuring Charlie Brown and Rudolph. The CW's "90210" was fifth.

The first hour of the Kennedy Center Honors had a 6.4/10 for CBS, nipping the 6.2/10 for "Law & Order: Special Victims Unit." The NBC procedural comfortable won the hour in the 18-49 demographic. FOX's "Fringe" took third with a 3.1/7, topping ABC's Rudolph special and "According to Jim." The CW's "Privileged" had a 0.7/1 for fifth.

CBS closed things out in first with a 6.8/10 for the Kennedy Center tribute. A second hour of "Law & Order: SVU" held stable in second for NBC. ABC, meanwhile, snuck an original episode of "Eli Stone" onto its schedule for a 2.4/4 reward.

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