The Rules of Engagement repeat and the 9pm repeat of The Office were each adjusted down a tenth with adults 18-49 versus Thursday's preliminary ratings
Final national broadcast primetime ratings for Thursday, December 29, 2011:
| Time | Net | Show | 18-49 rating/Sh | Viewers (Millions) |
| 8:00 | CBS | The Big Bang Theory (R) | 2.8/9 | 10.16 |
| ABC | Happy New Year, Charlie Brown (R) | 1.1/3 | 4.26 | |
| FOX | Bones (R) | 1.0/3 | 4.82 | |
| NBC | Community (R) | 0.6/2 | 2.06 | |
| CW | Vampire Diaries (R) | 0.3/1 | 0.90 | |
| 8:30 | CBS | Rules of Engagement (R) | 2.1/6 | 7.59 |
| NBC | Parks & Recreation (R) | 0.7/2 | 1.76 | |
| 9:00 | CBS | Person Of Interest (R) | 1.7/5 | 8.51 |
| FOX | Bones (R) | 1.1/3 | 4.79 | |
| NBC | The Office (R) | 1.0/3 | 2.55 | |
| ABC | Grey's Anatomy (R) | 0.7/2 | 2.79 | |
| CW | Secret Circle (R) | 0.3/1 | 0.85 | |
| 9:30 | NBC | Whitney (R) | 0.8/2 | 2.02 |
| 10:00 | CBS | The Mentalist (R) | 1.7/5 | 8.90 |
| ABC | Grey's Anatomy (R) | 1.0/3 | 3.14 | |
| NBC | The Office (R) | 0.8/2 | 1.91 | |
| 10:30 | NBC | Up All Night (R) | 0.7/2 | 1.89 |
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Nielsen TV Ratings: ©2011 The Nielsen Company. All Rights Reserved.
