CBS's Big Brother 5 went out with a bang on Tuesday, drawing its biggest audience of the season and teaming with the two-hour finale of The Amazing Race 5 to give the network its first Tuesday evening premiere week victory since the late 80's/early 90's glory days of ABC's Who's The Boss, Moonlighting, and Roseanne.

According to the final Nielsen national ratings for September 21, Big Brother 5's season finale drew 10.54 million viewers and posted a 6.8/11 rating/share in households, a 3.4/11 in the Adults 18-34 demographic, a 4.2/13 in Adults 18-49 and a 4.7/13 in Adults 25-54. The performance placed Big Brother 5 first in its time period in viewers, households, Adults 18-34, Adults 18-49 and Adults 25-54.

Combined with The Amazing Race 5, Big Brother 5's performance resulted in CBS placing first for the evening in viewers (12.08 million), households (7.7/12), Adults 18-34 (4.4/13), Adults 18-49 (5.1/14) and Adults 25-54 (5.7/14) and winning every half hour in Adults 18-49, Adults 25-54 and Adults 18-34.

CBS's performance, coming during the Tuesday evening of the first official week of the 2004-2005 Nielsen ratings year, gave the network its first premiere Tuesday win among viewers since 2002, but more notable was the network's performances among key demographics, where CBS finished first among Adults 18-49 and Adults 25-54 for the first time since 1990 and first in the Adults 18-34 for the first time since Nielsen began tracking such statistics in 1987 via the introduction of its people meters system.