Thursday’s 8PM timeslot was a big one for comedies this week, with “The Big Bang Theory” rising to one of its highest marks this season and “Community” debuting to improved numbers.

“Big Bang” rose considerably to a 6.1 adults 18-49 rating with 18.9 million viewers, giving the CBS series a hefty advantage over “American Idol.” Across its full hourlong telecast, “Idol” posted a mere 4.1 adults 18-49 rating with 13.2 million viewers.

CBS’ “Big Bang” led into “Two and a Half Men” (4.1, 14.2 million).

Over on NBC, cult favorite “Community” posted a relatively-solid 1.8 adults 18-49 rating with 4.0 million viewers. That led into “Parks and Recreation,” which delivered a 2.0 and 3.9 million.