CBS rolled again on Mondays, with its comedies taking the night’s top four spots among young adults and drama ”Hawaii Five-0” rising opposite a pair of news programs on the competition. ABC’s interview with Rep. Gabrielle Giffords scored well, while NBC’s interview with former Penn State coach Jerry Sandusky provided a bit of a boost for ”Rock Center.”

According to preliminary national estimates from Nielsen, ”How I Met Your Mother” (4.5 rating/12 share in adults 18-49, 10.4 million viewers overall), ”2 Broke Girls” (4.8/12 in 18-49, 11.7 million viewers overall), ”Two and a Half Men” (5.3/12 in 18-49, 14.6 million viewers overall) and ”Mike and Molly” (4.4/10 in 18-49, 12.2 million viewers overall) were all up a bit week to week, with ”Broke” hitting a season high for its regular timeslot and ”Men” once again standing as the night’s top-rated entertainment series in key demos. They were followed by sophomore drama ”Hawaii Five-0” (3.3/8 in 18-49, 11.5 million viewers overall), which was also up vs. last week to post its best scores since its season premiere. CBS easily topped its broadcast rivals for the night in all under-55 demo categories.

ABC, which dominated Monday in total viewers, opened with ”Dancing With the Stars” (3.4/8 in 18-49, 18.5 million viewers overall), which was on par with last week as it has picked up some ratings steam of late. It was followed by the Diane Sawyer-fronted ”20/20” news special ”Gaby and Mark: Courage and Hope” (2.8/7 in 18-49, 13.4 million viewers overall), which was up vs. the recent average of ”Castle” in the timeslot; it led its 10 p.m. broadcast competition in total viewers and was the net’s top-rated primetime news program since July’s ”20/20” featuring Sawyer’s interview with Jaycee Dugard. (Note that the preliminary, affiliate-based averages for ABC include a preemption for ”Monday Night Football” on its CBS station in Milwaukee.)

Fox’s dramas remain sluggish on the night, with ”Terra Nova” (2.3/6 in 18-49, 7.1 million viewers overall) and ”House” (2.5/6 in 18-49, 6.7 million viewers overall) both down week to week and ranking third among the broadcasters in their timeslots.

NBC’s ”The Sing Off” (1.5/4 in 18-49, 6.9 million viewers overall) was in line with last week, and 10 p.m. newsmag ”Rock Center” (1.3/3 in 18-49, 4.5 million viewers overall), whose opening 20 minutes included Bob Costas’ phone interview with Sandusky, rose from last week’s 1.0 in the demo and was up slightly from the 1.2 that drama ”The Playboy Club” earned with its third and final original episode in the timeslot in early October. (Note that NBC’s station in Minneapolis aired ”Monday Night Football,” so the net’s averages for the evening are subject to change.)

At CW, ”Gossip Girl” (0.6/2 in 18-49, 1.2 million viewers overall) and ”Hart of Dixie” (0.6/1 in 18-49, 1.6 million viewers overall) were on par with last week in demos, though the latter rookie was up in total viewers.

Preliminary 18-49 averages for the night: CBS, 4.2/10; ABC, 3.2/8; Fox, 2.4/6; NBC and Univision, 1.4/4; CW, 0.6/2.

In total viewers: ABC, 16.8 million; CBS, 12.0 million; Fox, 6.9 million; NBC, 4.7 million; Univision, 3.4 million; CW, 1.4 million.