Ratings: Big Bang Makes Its Biggest Bang, Rules Returns Strong, Secret Circle Up

With a meh-rated World Series bumping X Factor and NBC comedies in repeat mode, The Big Bang Theory capitalized on an opportunity to geek out in the ratings department.

The CBS comedy gained 11 percent week-to-week to deliver its most-watched and highest-rated Thursday episode ever (drawing 14.93 million total viewers while scoring a robust 5.1 demo rating, based on final numbers).

That teed up new lead-out Rules of Engagement (11.5 million viewers/3.6 rating) for its most-watched and highest-rated fall premiere since 2007. (At last tally, the doomed How to Be a Gentleman delivered 7.6 mil/2.5 in the time slot).

Other shows notching increases include The CW’s The Secret Circle (2.11 mil/0.9), which was up some 13 percent week-to-week (leading out of a flat Vampire Diaries, 2.9 mil/1.4).

Elsewhere on the night:

* Fox’s coverage of World Series Game 2 averaged 12.9 million total viewers and a 3.7 rating, down some 10 percent from Wednesday’s opener.

* ABC’s dying-on-the-vine Charlie’s Angels (5.63 mil/1.2) dipped 5 and 8 percent. Grey’s Anatomy (9.4 mil/3.5) was down a bit, while Private Practice (6.6 mil/2.4) — facing a Prime Suspect repeat — saw slight gains.

* CBS’ Person of Interest (12.3 mil/2.7) drew a few extra eyeballs while holding steady in the demo, while The Mentalist (12.5 mil/2.5) was flat.

What were you watching on Thursday night?