If I happened to have a pile of hardware for a bit, nothing cutting edge but six boxes with twin dual core opterons.
24 cores on 1.8Ghz cpus and 16Gb per box.
Is there anything I can throw them at in a useful manner as a DC project ?
go proper old skool and put in some SETI units 
Be nice to crunch some seti units again. Been a long while. Worth a shout TFW