The house my family lives in now was built in the 1930's, and as far as we know, there was only one man that lived in it. I am 18 now, and for quite some time I have been convinced that our house has some sort of spirit in it.
First off, when I was younger, about 10-11, my sister, who was about 12-13, and I, would be in the basement, while we were home alone, we would hear the chairs in our dining room being moved. We would always go upstairs to see if our parents had come home from work, but they never were home when we heard the chairs moving.
One summer day, around the same time we were hearing those sounds, we were fooling around with the video camera. I was sitting in the garage (which was right below the dining room, where we heard the chairs moving), and my sister filmed me just playing around. Later that day when we were looking at the footage, right next to me we swore we could see something that resembled a ghost. It was to the right of me and it looked purple and white. After this experience I never really heard anything that freaked me out too badly.
Another thing that happened was about five years ago. I was sitting in my bed, during the summer, and I had just watched The Exorcism of Emily Rose, a couple of nights before that so I was scared. I couldn't sleep that night for some reason so I was just lying in my bed for a couple of hours. If anybody saw that movie, it explains that the devil usually appears at three am. I was lying there at 2:30 am, and was freaking out because I wanted to be asleep by three. I could not fall asleep at all, and at exactly three o'clock (no exaggeration) the light in the hallways started to flicker. When that happened I nearly died! I was so scared, and I did not go to sleep that night at all. That never happened again, but one more thing did happen about one year ago.
I was sitting in my room pretty late, my parents were sleeping, and then I head sounds coming from my attic. It sounded like something was rolling back and forth on the attic floor. It scared me so much.