Creep (2015)
While not the first horror film to utilize the documentarian format, The Blair Witch Project is undoubtedly responsible for ushering in the era of the found-footage subgenre. The reason is as simple as the storyline: it's cost-effective to assemble a trio of unknown actors rife with improvisational ability, deposit them in the woods, nature's most organically nightmarish setting, and observe them as they gradually lose their sanity to the paranoia of being hunted by a legendary witch. A decade later, Paranormal Activity reignited horror fans' obsession with found footage, placing a long-term couple in a similar environment. Only instead of the woods, the couple is stripped of their sense of safety in the supposed comfort of their own home, where the natural darkness of the night takes on a sinister ambience as a demonic presence from one of their pasts re-latches itself onto them. From that point onward, so began a long-running franchise whose first three installments wer...