Kunal Nayyar and Melissa Rauch Kunal Nayyar and Melissa Rauch

CBS topped Thursday, led by The Big Bang Theory

The comedy drew 18.6 million viewers and a 5.2 in the adults 18-to-49 demographic, on par with last week. Two and a Half Men (8.6 million, 2.1) was also flat, while the rest of CBS' lineup inched up a few tenths.

Fall TV Report Card: How's the new class doing?