A two-and-a-half minute horror movie called "Lights Out" is making the rounds online. We don't want to ruin it for you, but it's about a woman who turns off the lights to go to bed. Then strange, unexplainable things start happening.
(Search for "Lights Out Horror Film." She sees a mysterious silhouette at :17, and you finally see whose silhouette it is at 2:28.)