‘Quatermass and the Pit’ (1967 – Hammer Films) still scares me at some deep level. The sound the Ship makes when it wakes up still give me the willies. I’ve lost count of how many times I’ve watched it – easily 30+ times.
Modern ‘horror’ films – I find most are over-hyped and either disappointing or ludicrous or both.
Exception being ‘The Haunting of Hill House’ – yes, that was a series, but it had points where I had to put the TV on ‘hold’ while I braced myself before I could dare to watch.