You may have heard that your smartphone contains more computing power than all the computers used on the Apollo mission combined. But imagine taking the computing power of a Super Nintendo, and packing it into a computer the size of--a living room? On the surface, that might seem pointless. And yet, that's precisely what one man in Cambridge, England set out to accomplish. Four years ago, James Newman began work on what he calls a "megaprocessor," a thousand pound, 16-bit computer that takes up most of his living room.