4. Slender Man
If you use the internet then chances are you will be familiar with the legend of the Slender Man. The creepy child abducting phenomenon rose to infamy after appearing on meme's created for a competition on the Something Awful forums. Over the years the legend has grown into something of an urban myth and would be the perfect subject matter for a modern horror movie. Remember The Candyman? The idea there was a local urban legend that most people dismiss turns out to be terrifyingly real and that's exactly what approach has been taken in this fake trailer created by YouTube channel Bloodrunsclear. Mixing together traditional film techniques with documentary style 'real footage' the film looks to investigate the phenomena while presenting itself as a horror that will undoubtedly make you fill your pants. If you've any doubts over how scary Slender Man really is then we'd suggest you check out the video by Internet nerd/sensation Pewdiepie. Now THAT is scary.