There seems to have been some minor technical barrier surmounted in animation, and now you can stick realistic-looking moving mouths wherever you want to in an ad.
Unfortunately, there is absolutely no good use for realistic-looking mouths anywhere but on someone who already has a completely functional mouth, in a pretty good spot. So whenever the technology comes up, it is almost miraculously creepy.
Below, a couple of students from Uncanny Valley High, class of 2012:
"Another one of those green beers, Scarecrow?" I stay home on St. Patrick's Day, and now I know why.
Holy ....! PSAs tend to attract a bad element--recent grads with more technical capabilities than sense, a feeling that they don't need to pay attention to consequences because they are doing something socially good, and access to public-service money that needs to get spent so that a box gets checked on some bureaucrat's annual plan. This one is particularly egregious. (via Copyranter, who has just moved to Buzzfeed. Actually, I bet the three-mouthed beast is from Copyranter too, but I was too traumatized to remember where I saw it). I'm sure newly breastfeeding moms have exactly this nightmare.
When something can be done, it will be done, but that doesn't mean it should be done.