Horror cinema is a monster. Mistreated, misunderstood and subjected to vicious critical attacks, somehow it keeps lumbering forward, leaving a trail of destruction in its wake. For some, horror films are little better than pornography, focused purely on evoking a reaction. For others, they're just a bit of fun. Here are the 100 best horror films, as chosen by those who write in, direct, star in and celebrate the genre.