With the colossal success of the Marvel Cinematic Universe, it feels like there's never been a better time to be a nerd: they're being catered to more than ever before, and by and the large, the results are pretty awesome. But let's move away from the super-obvious likes of Marvel, Star Trek, The Lord of the Rings and The Matrix, because let's face it, you're probably not a nerd if you haven't seen those movies. Let's take a look at a wider range of titles, from art-house dramas to big-budget sci-fi, which might've passed you by to date (undeniably popular though many of them still are). With parodies of iconic sci-fi franchises, outrageous splatter-fests, low-budget indies and even an iconic anime, here are 20 movies every nerd must see before they die...