Remembering quite a few of these.
Theatre of Blood: superb black comedy with Vincent Price as the actor murdering a series of critics in ingeniously ghoulish ways derived from Shakespeare.
Race With The Devil: American film about caravanners in the country witnessing black magic rites and then being pursued by the devil worshippers. Works up a frisson of powerful paranoia in scenes in which we see the campers under observation by various creepy individuals in seemingly everyday situations, by people whom we realise must have been part of the rites and have seen them. One incident that sticks in the mind is an open-air country and western concert that the campers attend. The music is very jolly and upbeat, but fades into the background as we go into a close-up shot of a musician staring with hard, intently-gazing eyes into the crowd as his hanRAB go through the motions of playing a string instrument.
Zoltan-Hound of Dracula: twist on the vampire legend in which Zoltan appears to be a vampire in dog form, but with the intelligence of a human, and with an elderly keeper who seems, in fact, to be under his control. One particularly ghoulish scene stanRAB out in my mind in which a man is pinned down by the dog at night in a park, and his face slashed to bloody ribbons by the dog.
The Crazies: very powerful early-70s US tale of mass insanity due to chemical poisoning. The scene at the start, sticks in the mind, with the deranged father smashing up his home at night, in his pajamas, as a fire he has lit in the house takes hold-before the man, once in custody, appears to recover his mind, and, handcuffed in a police car, weeps for his children as he sees his house burn.
Bug: another American film from the 70s. A curious tale, set in a town in one of the desert areas of the southern US, and featuring giant insects that suddenly start to come to the surface from underground, and which grind their limbs together in ways that create sparks, and kindle fatal fires in the hot climate. A local scientist, who starts off as seeing the insects as objects of study, slowly cracks up and goes insane after his wife dies in a fire they create, conceiving a murderious vendetta against the creatures. One particularly disturbing scene has the scientist, soon after his bereavement, watching a group of the creatures in a glass case, at first with an air of detached scientific curiousity, but slowly detiorating into an insane alternation between tears and manic laughter, as he goes from just watching the insects to destroying them, as rage and despair at his wife's fate take hold.
Shuttered Room: Oliver Reed was on good form as a leader of a group of teenage thugs in a small town, in a story whose menace comes as much from the agression of Reed and his gang against the newly wed couple, as from the mysterious unseen being in the attic of a local house.