ACA's Not Exactly a Ratings Bonanza...

In the adults 18-49 demographic, CBS led the way with a 3.3 rating, beating out NBC's 2.4. No other network broke the 2.0 mark; ABC and FOX tied for third at 1.5, and The CW earned a 1.0.

Monday hour by hour:

8 p.m.

CBS: "How I Met Your Mother" (9.4 million viewers, 5.7/9 households)/"Rules of Engagement" (8.8 million, 5.4/8)
NBC: "The Sing-Off" premiere (8.8 million, 5.3/8)
FOX: Special - American Country Awards (6.1 million, 3.6/6)
ABC: "Skating With the Stars" (4.9 million, 3.2/5)
The CW: "90210" (2.1 million, 1.4/2)

18-49 leader: "How I Met Your Mother" (3.6)

9 p.m.

CBS: "Two and a Half Men" (13.3 million, 8.1/12)/"Mike & Molly" (11.1 million, 6.8/10)
NBC: "The Sing-Off" (8.3 million, 5.0/7)
FOX: American Country Awards (5.8 million, 3.5/5)
ABC: "Skating With the Stars" (4.5 million, 3.0/4)/"Modern Family" rerun (4.45 million, 2.8/4)
The CW: "Gossip Girl" (2.1 million, 1.4/2)

18-49 leader: "Two and a Half Men" (4.1)

Numbers from Nielsen...Zap2it....