Last night's episode of The Big Bang Theory topped its time slot, beat American Idol outright for the first time and ranked as the night's most-watched and highest-rated program.
"The Werewolf Transformation" was watched by 16.11 million people, up by 460,000 viewers from last week, and scored a 9.7/16 rating in households. The Big Bang Theory scored a 5.2/15 rating in the adults 18-49 demographic, a 6.6/7 rating among adults 25-54 and a 3.9/13 among adults 18-34. The show was up by 2% in the adults 18-49 demo from last week. The Big Bang Theory finished first in its time slot and for the night as a whole in total viewers, households, adults 18-49 and adults 25-54.
Although The Big Bang Theory has topped American Idol in the ratings for the past five weeks, this was only when compared to American Idol's performance in the same half-hour period as The Big Bang Theory. Yesterday's episode of The Big Bang Theory rated higher than Idol's entire hour-long broadcast. The Big Bang Theory also beat American Idol in the shared half-hour by the largest margins yet.
, 13:32 Mar 21 2012.
, 22:43 Mar 6 2012.
, 19:23 Mar 6 2012.
, 12:23 Mar 6 2012.
, 23:26 Mar 4 2012.
, 16:20 Mar 1 2012.
, 14:01 Feb 27 2012.
, 13:58 Feb 27 2012.
, 19:01 Feb 26 2012.
, 16:04 Feb 26 2012.| Title | Date Posted | Category |
| Big Bang Theory tops American Idol in key ratings | January 20 2012 | Show |
| Episode 5.14 Ratings: Bigger than American Idol | January 27 2012 | Show |
| Ratings: The Bang Gets Louder | September 29 2009 | Show |
| Episode 3.09 Ratings - Biggest Bang Ever | November 24 2009 | Show |
| Ratings: Final bang is even bigger | September 22 2009 | Show |