Viewers may have been angry that NBC interrupted the Closing Ceremony in order to air a preview of new fall comedy Animal Practice — but a ton of them watched the show anyway.

The show, starring Justin Kirk as a unconventional-but-lovable vet, garnered 12.8 million viewers and a 4.1 rating in the 18-49 demo, according to early figures from Nielsen Media Research. That number, however, is still less than the 16.1 million viewers who tuned in to see a Wednesday night preview of Matthew Perry’s Go On, which delivered a 5.6 demo rating.

Animal Practice retained about 49 percent of its whopping Olympic lead-in rating in the demo (4.1 vs. 8.4) and 47 percent of its total audience (27.4 million).

In all, it can be said that NBC’s previews did a solid job of exposing its fall slate, including Ryan Murphy’s New Normal, to a gigantic captive audience (no one scoffs at 12 million+ viewers), but at what cost? Says one irate commenter: “And now I have blocked NBC from my TV… Looks like I am going to miss that monkey show.”