The Medium
One of the best horror movies I've ever seen, the setting, the acting or even the topic is all almost perfect.
Even though it's a very good movie, there are still those stupid decisions that no one understands, for example: if your daughter is possessed (and you know it), why do you keep sleeping in that house?
Or else, the cameramen is something very interesting in this movie, however, he filmed the baby, I wonder if he didn't have the ability to warn "look, your son is here, since Mink is possessed it is possible that she is doing it on purpose", instead of doing this he is in complete silence and spoils the ceremony....
The movie is scary, it has some uncomfortable parts that make the movie even better.