Friends of ours had recently moved into an old house with the bedrooms off a long uncarpeted upstairs hallway. About the second or third night they were wakened by a regular clunck, clunk, clunck, sound coming down the hall towards their room. Rob jumped from bed armed with a baseball bat, peeked out the doorway down the hall and saw nothing. He retired again, only to hear the clunk, clunk, clunck sound, this time closer to their room and again sprang from bed, threw on the hall lightswitch and again, nothing. Unsettled they lay there and again the sound resumed, ever closer and again he repeated his perfomance. This time he looked at the floor and before him was his son's hamster, balancing a teaspoon in its mouth which clunked from side to side as it travelled the length of the hallway with its prize. So much for ghosts.......