With two of film's most legendary superheroes going against each other, Batman v Superman: Dawn of Justice - released this week - is one of the mostly hotly-anticipated films of the year.
But surely there are films that would have two characters slugging it out that everyone would much rather see.
With Halloween just around the corner, there's nothing quite as exhilarating as a masked killer rampaging around and putting big holes in attractive people who are pretending they are teenagers.
We've seen many masks in films, some iconic, some a bit rubbish.
But which is best, most frightening and downright terrifying? Check out our rundown...