One of the interesting aspects of anomalies is that sometimes the really unusual, rare phenomena - so rare that they are usually overlooked - can be well documented. Thus, the case of the talking stovepipe was meticulously investigated by the police and other city officials, not to mention the crowds which gathered round. Similarly, the room that forced people to walk on their hands was investigated on the orders of the local magistrate. And the terrifying experience of a couple in Bristol in 1873 had its day in court.