The Big Bang Theory posted its best ever ratings yesterday in total viewers and key demographics. The show continued to build on its lead-in Two and a Half Men in the demographics.
Last night's episode was watched by 14.38 million people, a record for the show, placing it first. The show set an 8.4/13 rating in households, also coming first. The show also came first with series highs in the key demographics: adults 25-54 (6.5/14), adults 18-49 (5.6/13) and adults 18-34 (4.5/12).
It built on Two and a Half Men by 12% in adults 18-49, 25% in adults 18-34 and 5% in adults 25-54.
| Title | Date Posted | Category |
| Episode 3.23 Ratings | 25th May 2010 | Show |
| Episode 3.22 Ratings | 18th May 2010 | Show |
| Episode 3.21 Ratings | 11th May 2010 | Show |
| Episode 3.20 Ratings | 4th May 2010 | Show |
| Episode 3.19 Ratings | 13th April 2010 | Show |