It's a simple fact of cinema that movies are going to end up with some mistakes making it into the final cut.
No matter how obsessively perfectionist a filmmaker might be, there's no way for any single person to keep track of every last variable that goes into completing a film.
For the most part, audiences are happy not to fixate on the minor details if a film is good enough, though when films reach a certain level of popularity there's an undeniably rabid breed of fans who will pick out every last peculiar mistake.
But sometimes there's more to mistakes than mere sloppiness, and sometimes there's compelling evidence - if not outright confirmation - that the gaffes were intentionally kept in the final cut after being spotted, or perhaps even partially conceived by the filmmakers themselves.
These 10 horror films, many of them classics of the genre, each contain an eccentric mistake which, in the end, was left in the movie to further the film's off-kilter tone and keep audiences on an uneven keel.
The fact that many of these "mistakes" are still being fervently debated today is a testament to how utterly ingenious they are...
Stay at home dad who spends as much time teaching his kids the merits of Martin Scorsese as possible (against the missus' wishes).
General video game, TV and film nut. Occasional sports fan. Full time loon.