I've never been a fan of 'Gothic', but i love 'Altered states' and 'Lair of the white worm'.
Have you seen the 'The Devils', 'Tommy' and 'Crimes of passion'?, my other favourite Ken Russell films and well worth watching if you enjoy the films mentioned.
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MIKE: I've got it! Peter Cushing! We've got to drive a stake through his heart!
VYVYAN: Great! I'll get the car!
NEIL: I'll get a cushion.