Note: lists are subjective and are not meant to be an objective assessment of the quality or value of any particular movie. This list is undeniably personal and it reflects my own thematic preferences. I consider "best" to be some kind of combination of technical achievement, enjoyment of viewing and a variety of other factors. It's also contextual: ask me a month from now and I might provide you with a very different looking list. Additionally, it was difficult for me to leave some movies off the list which I actually adore (Aliens, Predator) but which I intuitively don't think constitute horror enough to be featured on a list such as this one. Understand all of this before replying or commenting with an outraged "how could you leave X off of the list!?" or "I can't believe you ranked X higher than Y!!!"