The final ratings are in and The Big Bang Theory did well, beating its lead-in (How I Met Your Mother) by a whopping 1.4 million viewers and beating NBC's Chuck by 0.31 million viewers.
| Title | Date Posted | Category |
| Premiere Ratings - first indications | 25th September 2007 | Show |
| Premiere Ratings - Fast Affiliate | 25th September 2007 | Show |
| Episode 3.17 Ratings | 9th March 2010 | Show |
| Episode 3.16 Ratings | 2nd March 2010 | Show |
| Episode 3.15 Ratings | 9th February 2010 | Show |