Plan 9 from Outer Space

Aliens resurrect the dead to stop humanity from developing a doomsday weapon. Bela Lugosi appears in a few minutes of footage shot before he died; the rest of his scenes are played by a taller man holding a cape over his face. Often cited as the worst film ever made, which is unfair. It is cheap and incoherent, but also earnest and fast-paced. Ed Wood wrote, produced, and directed it in a few days on a tiny budget. The film was not released until two years after it was made, and it was a commercial failure. It found its audience through television reruns in the 1980s.