i dont really believe in ghosts, however..
My cousins once lived in a house that was apparently haunted, one of the freakier stories they told me (about that house) was, once when everyone was already in bed, sleeping their doorbell rang.
The scarry thing is that the doorbell had never worked before, and this was the only time it had ever worked.
They also claim that they heard things at night, like someone walking thru the hallway and their pet dog occasionally barked at thin air, although it could have been possums in the roof that they heard and maybe thats what the dog barket at, maybe??
My aunty also claimed to have seen a figure running towards the kitchen at night, no one was awake, she had gotten up to go to the toilet and the house was completely dark... she was freaked out and they moved out eventually.