The Haunting ★★★

Eh. Having seen it on many "Scariest Ever" lists over the years, I was royally disappointed by The Haunting. I didn't find it frightening at all, and Julie Harris's character was annoying. Then again, I'm not a fan of hers to begin with.
Claire Bloom is so cool in this.
The cinematography is interesting (if gimicky) and for this reason alone I'd say it is required viewing for anyone concerning themselves with the technical aspects of film-making.