Two hours of Jack Bauer helped Fox lead the night Monday. The show earned a 4.9 in 18-49s during its first hour and a 5.0 in its second, with 13.4 million average viewers, according to Nielsen Media Research.
On NBC, Heroes took a 6.3, with 14.7 million viewers. CBS' new sitcom Rules of Engagement followed its powerhouse debut last week with another powerful showing, outdoing its Two and A Half Men lead-in with a 5.0 and 13.5 million viewers. At 10 p.m. CSI: Miami went to season highs with a 6.4 and 19.9 million viewers.
Also hitting season highs were Wife Swap and Supernanny on ABC.
At 8 p.m., Fox began the night in the lead with a 4.9 for the first of two hours of 24. NBC was second with a 4.6 for Deal or No Deal, ABC third with a season-high 3.7 for Wife Swap and CBS fourth with a 3.4 average for How I Met Your Mother and The Class. The CW scored a 1.2 average for Everybody Hates Chris and All of Us.
At 9 p.m., NBC took its 6.3 for Heroes, Fox took a 5.0 for 24, and CBS took a combined 5.0 for Two and a Half Men and Rules of Engagement. ABC scored a 4.1 for Supernanny, and CW earned a combined 1.3 for Girlfriends and The Game.
At 10 p.m., CBS scored 6.4 for CSI: Miami, NBC earned a 2.8 for Studio 60 on the Sunset Strip, and ABC took a 2.7 for What About Brian.
Overall, Fox took the night with a 5.0 rating/12 share and 13.4 million total average viewers; CBS, 4.9/12, 14.6 million; NBC, 4.6/11, 12.4 million; ABC, 3.5/9, 7.9 million; CW, 1.2/3, 2.6 million.