Gizmodo is running a guide on how to install Ubuntu on a Playstation 3
and set it up to play vintage games through emulation. Quoting:
"It still kind of surprises me (in a good way) that Sony was, from the start, very OK with PS3 owners tinkering with Linux on their PS3s. A modified release of Yellow Dog Linux was available from the very beginning, and some very handy hard drive partitioning and dual-boot utilities are baked right into the PS3's XMB; Ubuntu gets installed on an entirely separate partition of your PS3's hard disk, so your default system doesn't get touched and switching between Ubuntu and the XMB is a piece of cake. There is a flipside to this coin, however. Since the PS3's Cell Processor is PowerPC based, you won't be able to use any Linux software that's compiled for x86, which is, unfortunately, most of it. However, Ubuntu has always had a PPC distro, and most of the basic stuff will work just fine. You can even load up a PPC-compiled Super Nintendo Emulator, SNES9X, and play some classic games pretty easily on your Sixaxis controller paired via Bluetooth."