Plan 9 from Outer Space (1959) IMDb
Almost irrelevant in the context, but UFOs are visiting Earth in an attempt to prevent sunlight from exploding all over the universe.
Legendary kitsch, directed by Ed Wood (nary a retake in sight) and featuring Bela Lugosi until he died, and then some. Narrated like a documentary. It is more competently made than “Manos”: The Hands of Fate (1966) and its ilk. In particular, the seriousness of Plan 9 as an effort adds to its charm.
References here: Night of the Living Dead: 30th Anniversary Edition (1999).