Fast National Ratings
| TIME | NETWORK | SHOW | VIEWERS | 18-49 |
| 8:00 | CBS | THE BIG BANG THEORY | 17.58M | 4.5/16 |
| NBC | THE VOICE (8-10pm) | 12.10M | 3.5/11 | |
| ABC | DANCING WITH THE STARS (8-10pm) | 11.62M | 1.8/6 | |
| ABC | GOTHAM | 4.49M | 1.6/5 | |
| FOX | PENN & TELLER FOOL US | 1.34M | 0.4/1 | |
| 8:30 | CBS | LIFE IN PIECES | 11.52M | 2.7/9 |
| 9:00 | NBC | THE VOICE (8-10pm) | 12.10M | 3.5/11 |
| ABC | DANCING WITH THE STARS (8-10pm) | 11.62M | 1.8/6 | |
| CBS | SCORPION | 10.98M | 2.2/7 | |
| FOX | MINORITY REPORT | 3.09M | 1.1/3 | |
| CW | WHOSE LINE IS IT ANYWAY (r) | 1.32M | 0.4/1 | |
| 9:30 | CW | SIGNIFICANT MOTHER | 880K | 0.3/1 |
| 10:00 | NBC | BLINDSPOT | 10.60M | 3.1/10 |
| CBS | NCIS LOS ANGELES | 8.00M | 1.2/4 | |
| ABC | CASTLE | 7.09M | 1.2/4 |
| Total Viewers (Avg Per Hour): |
| NBC: 11.64M |
| CBS: 11.21M |
| ABC: 10.11M |
| FOX: 3.79M |
| CW: 1.22M |
| Adults 18-49: |
| NBC: 3.4/11 |
| CBS: 2.3/8 |
| NBC: 1.6/5 |
| FOX: 1.3/4 |
| CW : 0.4/1 |
(r) Repeat
TV Ratings For 09/21/2015
