So do you have some PS3 and you're boring of play and watch Blue-Ray movies?
You must know the PS3 is the most accessible CELL-based machine, why not use this computer problem in other areas beyond entrainment.
In this PS3ClusterGuide you can build step-by-step your own cluster with PS3, the receipt:
1. Take some PS3.
2. Interconnect it in a LAN.
3. Install Fedora PPC in each one.
4. Install cluster utils.
5. Learn to code in CELL-SDK for a better experience and performance.
I accept some PS3 for scientific probes ... really I just want one to play ...