He reports that Professor Guarav Khanna at the University of Massachusetts has clustered 8 Sony Playstation 3s (donated by Sony) to create one supercomputer. Researching his black holes and quantum cosmology cost him $5,000 in grant money on a conventional supercomputer, but for way less than that, one can run whatever complex computations they desire with the supercomputer created out of PS3s.
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Picture stolen from ZDNet, please don't sue me!
Awesome!