Maybe a little silly but still effective. It's an anti-horror film, if you will, containing more quiet tension and creepy atmosphere than outright scares and thrills. Polanski really capitalizes on the paranoia and dread, and even though the film has been so absorbed into pop culture, these elements are still palpable.

Very silly and campy, but competently made and interesting at times. Didn't find it to be scary and some scenes were just awful (hail satan). Loved Cassavetes in this. I also can't wait for the Michael Bay remake. "Witches... All of them witches! " *building randomly explodes*

Scary as hell yet restrained. Great sense of humor.

Seriously the most scary movie I have ever seen. And I ain't easily scared...

A very good and effective horror movie that could have been great if it didn't go the whole HAIL SATAN route. I honestly just expect more from Polanski. It's probably the weakest of his Apartment Trilogy. Unlike in Repulsion (and even The Tenant), Rosemary's Baby feels conventional and even downright silly. The ending is terrible.

The scenes in between the action are provocatively tense, and help to draw the viewer into a bizarre world that is wreaking havoc on Farrow's Rosemary. The film is, perhaps unintentionally, a parody of spousal abuse and sexism, made all the more tragic by the way Rosemary wastes away throughout the it, becoming a shadowy wreck unable to handle the unnatural difficulties of her personal life, who ultimately gives into the difficulties of the world around her.

It is a bit dated now but it is still the "horror" film with the best acting and one of the best scores. The slow build up is great.