@Elwood
I've tried Folding@Home on my PS3, but I found the work units way too large. I think I even registered with the Amiga team on that, but I've yet to submit any work. The fact that it doesn't run in the background makes it kinda useless to me - I'd rather save on electricty than leave the PS3 on all day and risk overheating (although it is quite useful and cost effective as a heater in the winter
). I prefer to run dnetc on my PS3 - I don't switch it on just for that, but when I've got Linux booted I'm happy to leave dnetc churning away in the background while I'm using it for other stuff.