American Idol, Dancing with the Stars, NCIS and The Mentalist led overall viewing for the week ending March 29. NBC placed only one show in the most-watched top twenty list, ER, at number twenty.
The more important (but unheralded) weekly rankings among 18-49 year olds look a bit different. Some of the information is in the chart below, but several shows that don't make the overall top twenty are in the top ten among 18-49 year olds; Hell's Kitchen, The Office, Family Guy, The Biggest Loser and Lost you can view the full 18-49 top twenty show rankings and see for yourself. Please note, if you don't see an 18-49 ranking in the table below it just means the show was not among the top 26 shows with adults 18-49 that we saw the rankings for.
Nielsen Top Twenty Shows by viewers for the week ending March 29, 2009:
| Rank | Shows | R=Repeat S=Special P=Premiere | Net | # Viewers (LIVE+SD) (000) | HH rating (LIVE+SD) | HH SHARE (LIVE+SD) | 18-49 Rank |
| 1 | AMERICAN IDOL-WEDNESDAY | FOX | 26,025 | 14.7 | 23 | 1 | |
| 2 | AMER IDL THU RSLT SP-3/26(S) | S | FOX | 23,102 | 13.2 | 21 | 2 |
| 3 | DANCING WITH THE STARS | ABC | 20,339 | 12.9 | 19 | 4 | |
| 4 | NCIS | CBS | 17,832 | 11.2 | 17 | 12 | |
| 5 | Mentalist, THE | CBS | 17,620 | 11.2 | 18 | 13 | |
| 6 | DANCING W/STARS RESULTS | P | ABC | 16,117 | 10.3 | 16 | 14 |
| 7 | Grey'S ANATOMY-THU 9PM | ABC | 16,101 | 10.4 | 16 | 3 | |
| 8 | 60 MINUTES | CBS | 14,442 | 9.0 | 15 | 25 | |
| 9 | CRIMINAL MINDS | CBS | 14,358 | 8.8 | 13 | 22 | |
| 10 | CSI: MIAMI | CBS | 13,674 | 8.6 | 14 | 11 | |
| 11 | CSI: NY | CBS | 12,636 | 8.1 | 14 | ||
| 12 | AMAZING RACE 14 | CBS | 11,986 | 7.1 | 11 | 16 | |
| 13 | COLD CASE | CBS | 11,856 | 7.4 | 11 | ||
| 14 | TWO AND A HALF MEN | R | CBS | 11,146 | 7.0 | 10 | 19 |
| 15 | CBS NCAA BSKBL CHMP FR 2(S) | S | CBS | 10,996 | 6.9 | 13 | 9 |
| 16 | EXTREME MAKEOVER:HM ED-8P | ABC | 10,840 | 6.6 | 10 | 20 | |
| 17 | CBS NCAA BSKBL CHMP SA-2(S) | S | CBS | 10,606 | 6.6 | 12 | 17 |
| 18 | CBS NCAA BSKBL CHMP TH 2(S) | S | CBS | 10,375 | 6.7 | 12 | 15 |
| 19 | 24 | FOX | 10,370 | 6.1 | 9 | 23 | |
| 20 | E.R. | NBC | 10,355 | 6.7 | 11 | 21 |
Nielsen Ratings Data: ©2009 The Nielsen Company. All Rights Reserved
All numbers above based on live plus same day DVR viewing.





