Live +3-Day Propels THE BIG BANG THEORY to Over 20 Million Viewers, 12/13

THE BIG BANG THEORY exceeded 20 million viewers for the fifth consecutive broadcast, according to Nielsen live plus three-day ratings for Thursday, Dec. 13.

THE BIG BANG THEORY added +3.47m viewers (20.23m from 16.76m), +1.9 rtg pts in adults 25-54 (8.6 from 6.7) and +1.6 in adults 18-49 (7.1 from 5.5) live plus three day lift from live plus same day.

THE BIG BANG THEORY posted the night's largest live plus three day lift in viewers, adults 25-54 and adults 18-49.

The sixth year comedy now ranks as the season's number one entertainment program in adults 18-49 (6.7/20), ahead of "Modern Family" (6.3/17).

Leonard and Sheldon are brilliant physicists - wizards in the laboratory, but socially inept outside of it. Enter beautiful, free-spirited neighbor, Penny, who aims to teach them a thing or two about life. While Leonard spends his days looking for love, Sheldon is quite content video-chatting with platonic partner Amy Farrah Fowler, or playing Star Trek 3D Chess with their ever-expanding universe of friends, including fellow scientists Koothrappali and Wolowitz, and Wolowitz' new wife, the adorable microbiologist Bernadette.