"Behind the Mask: The Rise of Leslie Vernon." It plays into horror tropes using "found footage. "
Also, "Digging Up the Marrow." It's another found footage, but it's down to earth (in storytelling, not plot) with AMAZING practical effects and an actor who is way too hilarious to fit his role. If you like adult swim you'll recognize him.
Edit:
Also, "Oats Studios" is awesome. "series of experimental short films that envision post-apocalyptic worlds and nightmarish scenarios" -imdb