The Quatermass Xperiment. 1955.
Not many sci-fi horrors from this era can have a shock factor to them but us Brits knew how to create shock, terror and plenty of suspense and tension that relied on effects, acting and great direction. Right at the start it's laughable with a couple outside running to safety then part of the roof of the house collapses...should have stayed where they were.
Brian Donlevy is wonderful as Quatermass, a scientist with the bullying manner of a army drill instructor that may have R. Lee Emerey pleased and a fierce, pragmatic streak. Richard Wordsworth who brings abominable terror and helplessness to his character carrying an alien infestation from outer space from destroying Earth, that his onscreen appearance when changing can still give you chills.
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