From Cracked, which does the best job of mixing humor with darned good research: “The 6 Creepiest Things Discovered by New Homeowners.”

OK, based on what you have seen in horror movies/novels/TV shows, what is the one single thing that ensures your home will be infested with ghosts and/or poltergeists? Without question, it’s building your house on top of a burial ground. You’re angering not just one restless spirit, but dozens, who are sure to take vengeance on whoever has disturbed their sacred resting place.

So of all the possible things in the world you can find in your new home, none can be quite as unsettling as plunging a shovel into the floor of your basement only to have a child’s skull come rolling out.

And that’s from number six. Enjoy. (Note: Cracked’s language tends towards the R-rated. So if you’re easily offended by four-letter words (and I don’t mean “cake”), you may want to skip it.)