Well, I live in a house where a guy murdered his wife and daughter about 15 years ago. My father passed away here six months ago. I sense/feel odd stuff all the time, but I'm not convinced that that doesn't have something to do with the natural geography of the house, my mental state, etc, etc.... ie, logical scientific expalnations.
I tend to be quite skeptical by nature.... HOWEVER.... About two/three years back, we received some mail addressed to the murderer who used to live here. It was just from the traffic authority asking if he wanted to update his licence (now THAT is bureaucratic efficiency, is it not?). At the time, I didn't know that that was the killer's name (we knew there'd been a double homicide at the house, but the locals were quite hush-hush about it) and idly tossed it on the coffee table while I attended to more pressing things.
The following day, I came home from work after a rough day at work and sat on the couch. All of a sudden, the light in the centre of the room started swinging violently. The shade that was over it slid off the fixture and shattered. I'm not certain my feet touched the ground as I ran outside and called a friend to come and get me.
When I came home later that night, I researched the name on the letter and BINGO! it was the killer's name. The first thing I did was get straight up and throw that letter in the bin.... The bin a few doors down the street. The light has never swung like that since.... and on the odd occasion I get any mail with his name on it, it goes straight in the outdoor garbage.
Give the placement of this room in the household, both my father and I could find no logical reason as to why the light should have done that. It's smack dab in the centre of the house and there is basically no airflow through here at all, let alone something that could have made the light swing in such an extreme manner. Even looking up in the ceiling, there is no way that the light could have been rigged to act that way.
I'm not one to say "it was definitely ghosts" or anything like that.... All I know is that something really bizarre happened and the evidence seems to point in a certain direction. Make of that what you will....