Well, i see ghosts in my hallway sometimes, and sometimes i hear piano music. One time something weird flashed on my screen, i think it was a ghost that did it, since i dont have and Ads. ._.
Last summer we went with the debat group to the movie Insidious. And most of the members of the group are guys... so when the movie ended and anda heard that creepy sound while we left the theatre, the boys jumped out and scared the crap outta me so bad that I jumped two rows down... that hurt... A LOT... XD!