Beauty!  Still wondering if there's a flash ROM that has PS3 OS.  It seems it's easy to restore back to factory settings if the install screws up. 

Linux OS is built for PPC (Cell processor is based on PPC architecture) and versions of Linux for PPC Macs should work I guess.  Here's next question.. Can we install Mac OS X for PPC on PS3?  Not straight away.  You can't install OS X on any machine other than Macs!  There soon will be a hack.