I used to live in a basement where there was a lot of paranormal activity. One of the phenomenons was that when I would come in my bedroom and if I was upset, my lightbulb would explode, the window near the ceiling would slam open and shut, or things would fly across the room.

Once my youngest sister was coming down the stairs to talk to me after I had paticularly bad day at school. I wanted to be left alone, so I screamed up the stairs for her to go away. She kept coming down and so I screamed at her again to leave me alone. When she got to the bottom of the stairs, about a foot away from the door, I started to scream at her again when the door slammed violently closed in her face. She still swears that she didn't touch the door, and there was no wind coming through the house. I was accross the room.

It has not happened again since, but I think that the sprits occupying the house were paticualrly in tune with my emotional state.