name='GRAEME']Lots of great films being mentioned - Night of the Demon, especially and the Val Lewton ones.
But the thread started by asking about "high-brow" horror.
Surely that doesn't just mean "good" or even "intelligent". It's about trying to appeal to a different kind of audience - indeed I think it is about excluding the mainstream.
There are some examples of this - and I would argue they are generally bad movies.
Night of the Demon is an intelligent film, but very much a mainstream piece of cinema.