I'm not often one to start new threads, but this time I'm compelled. I've been having a lot of fun perusing the contents of the SCP Foundation: http://www.scp-wiki.net/
It's a documenting of bizarre, strange, and physics-defying items, objects, creatures, people, or locations. Hundreds and hundreds of entries, all pertaining to what could easily be Twilight Zone plot devices. There are creatures that are apparently immortal; apparitions that only exist as shadows; weird teleportations and mental influences. Some are capable of destroying the world, some are completely harmless.
Each SCP entry details containment procedures, and often outlines the various tests and experiments performed on each SCP. All my geek cells light up at the notion of taking a fictional device or item and trying to see what it could do. Imagine getting your hands on a lightsaber and experimenting with all the different materials you can cut through. Or capturing a ghost and putting it through the paces.
Some of them are just downright scary and creepy, like SCP-087
, and endless stairway haunted by the voice of a crying girl and a disembodied face. The exploration logs for this particular SCP have made it very difficult for me to be in the dark without getting a few chills.
If you like creepy or eerie or just downright mind-bending stuff, give it a peruse. There's a crapload of material to keep ya entertained.