CBS has accomplished an impressive feat in the Nielsen ratings, TVbytheNumbers.com reports. In results for the week ending Nov. 13, the top five scripted shows in the key adults 18-49 demo were all CBS comedies: “The Big Bang Theory,” “Two and a Half Men,” “2 Broke Girls,” “How I Met Your Mother” and “Mike & Molly.”

The network also hit another milestone, with “NCIS” becoming the first drama of the fall season to top 20 million total viewers — scoring 20.38 million in live plus same day numbers.

The network’s roll continued in overnight ratings for Monday night, with its entire prime-time lineup rising and the network scoring a comfortable win in the 18-49 demo, TVbytheNumbers.com reported. CBS finished the night with a 4.2 average rating, beating ABC (3.2 average), Fox (2.4), Univision (1.4) and NBC (1.4).

Monday’s battle for total viewers went to ABC with 16.8 million, ahead of CBS’s 12.0 million, Fox’s 6.9 million, NBC’s 4.7 million and Univision’s 3.4 million.

CBS’s Monday night sitcoms were all up slightly, with “Two and a Half Men” coming in as the night’s top show with a 5.3 average rating in 18-49. “2 Broke Girls” had a 4.8, “How I Met Your Mother” scored a 4.5 and “Mike & Molly” came in with a 4.4. The network’s 10 p.m. drama “Hawaii Five-0” was also up a little, to a 3.3 — its best number since its season premiere.

ABC’s two-hour “Dancing with the Stars” was even with a week ago with a 3.4 in 18-49. The network’s “20/20” special featuring Rep. Gabrielle Giffords scored a solid 2.8.

The news wasn’t as good at Fox, where “Terra Nova” was off 12% to a 2.3 in 18-49 and “House” was down 11% to a 2.5.

NBC, while creeping along in fourth place among the major broadcast nets, saw a bump for its “Rock Center.” The show climbed 0.3 ratings points to a 1.3 in 18-49 with an episode featuring an interview with Jerry Sandusky, the central figure in the Penn State child sex abuse scandal.