1. Plan 9 from Outer Space (1959)
Director: Ed Wood
Stars: Gregory Walcott, Mona McKinnon, Tor Johnson, Vampira, Bela Lugosi, Tom Keene, Dudley Manlove, Joanna Lee
The name Edward D. Wood, Jr. is synonymous with terrible filmmaking, and 1959's Plan 9 from Outer Space is the man's crowning achievement in awfulness. In fact, it's widely regarded as "the worst movie ever made." A bit harsh? Actually, no, not at all. One day, studies will prove that watching Plan 9 from Outer Space legitimately kills brain cells.
Until then, though, doing so is highly recommended, if only to witness the unbelievably bad craftsmanship firsthand. The plot is simple enough: Aliens want to prevent humans from creating a weapon that will bring about the world's end, so they use their self-designed "Plan 9" to bring Earth's dead back to life. So it's part Armageddon and part Night of the Living Dead, except without any of either film's most basic levels of skill.
Where to begin with what makes Plan 9 from Outer Space so shitty? For starters, scenes go by with actors very clearly holding scripts on their laps and reading from them, while boom microphones can be seen in Wood's shots. There's an opening narration that idiotically states "future events such as these will affect you in the future," and, to replace co-star Bela Lugosi (who died early into production), Wood cast his wife's chiropractor, despite the fact that the doctor was much taller than Lugosi and looked absolutely nothing like the former Dracula actor.