You might be surprised to learn that this beautiful sea critter (also known as a sea swallow or blue dragon) is actually a sea slug. The blue and silvery mollusk is known to feed off cnidarians like the venomous Portuguese Man o' War. What makes these gorgeous slugs even more fascinating is their practice of storing the cnidarians's stinging nematocysts within its own tissues — ensuring a painful sting to anyone who messes with it.
Watch through Blair Witch vision as some poor soul gets hopelessly lost in the subterranean stone tunnels of the Paris catacombs, and listen to him get more frightened as he speeds up his winding path (like he's being chased?) before the camera cuts out (was it dropped?). Then we hear the man either run off or get sucked into the spirit world. You watch and decide... if you're not claustrophobic, that is.
And the light from the "angel" has a strange weight to it -- you can see it pulse outward at the bottom as it suddenly gains mass after striking the ground. Anyway, maybe a Pixar animator got bored and threw this together just to mess with people. After contacting all of his or her friends in Jakarta, Indonesia, to stage it. Including, of course, his or her friends with access to the security footage of that particular public square.
A headless goddamned ghost appears right in goddamned front of them. You literally see it materialize on camera -- of all the entries on this list, this is the one you absolutely have to watch (here's a shorter version that cuts right to the ghost if you don't have 4 free minutes). Seriously, your mind will be blown like Eric Stoltz's penis in The Rules of Attraction. As they swing the camera lazily through the room, the ghost just walks very purposefully toward them like it's delivering a pizza, while a long, low moan emanates from its phantom lungs.