A brain simulator
SpiNNaker is a project to create a simulator of the human brain, The computer will consist of up to a million ARM cores to host a brain simulator. But as Steve Furber of the University of Manchester has correctly noted "[t]here are about 100 billion neurons with 1,000 trillion connections in the human brain. Even a machine with one million of the specialized ARM processor cores developed at Manchester would only allow modeling of about 1 percent of the human brain." Nevertheless, I am sure such a project will provide some scientific knowledge.