Exmouth Leisure Centre in Devon is now using a computer data centre, roughly the size of an average domestic washing machine, to keep its swimming pool heated. Hardware inside the box is surrounded by oil, which helps capture what would be waste energy in the form of heat, helping the water maintain a temperature of around 30C some 60% of the time.
My opinion? This is a damn good idea. Instead of treating every place like its own little island of consumption, we should figure out ways of sharing and collectively conserving energy and other resources.