This is a very creepy YouTube series I found. I don't know all the details of it yet so I'm not sure whether it is fake or not. Either way it is very entertaining.
Basically the story behind this, is a guy named Alex was working on a project called 'Marble Hornets'. Alex filmed a lot of tapes of himself and Marble Hornets during this time. In the introduction video his friend explains how Alex was originally going to burn the tapes but ends up giving it to him. The YouTube series gets updated with a new video/entry every time he finds something unusual in the tapes. This series is still running. I'm in the middle of finishing all the tapes but I thought I'd share it with you guys.
Start from the beginning of his videos. Watch the intro followed by Entry 1, Entry 2, and so forth.
To make sure you're watching in order, just click on the 'ate Added' button and scroll to the bottom.