Well, this did not happen to myself personally, but a few people we met up with one night told us something that definitely gave them chills.

One of them was asked by his uncle to go check out a house, but under no circumstance, to go check it out alone (uncle was doing work on this house).
Went by himself, saw some stuff/felt a weird presence there and ran out the house and called some other people to meet him there.

Shortly after a couple of them came to the house and they went inside together so that he could do whatever it was his uncle asked him to do.
All of them said that they could sense something in the house and one of them said that while he was in the basement had all objects hanging start lightly swinging w/o a breeze.

They also ended up finding dead animals around, pentagrams, candles and all those items associated w/ demonic rituals.

The kicker, once they got out of the house they saw some guy get out of his car, walk up to the house and just stand in the middle of the yard starring at it.
One of them asked the guy is he was alright and he just continued to stare at the house.

Met up w/ us later that evening, told us the story and needless to say, none of us they told it to really had the courage to go see it for ourselves.

Now, whether or not that was ghosts or something more demonic, I don't know, but definitely gave me the chills.
It even gave me chills simply driving by that area sometimes because I knew the location of the house.