PS3/Ubuntu
From fakedWiki
Install OtherOS++ so you can start Petitboot, telnet into your PS3, edit any of the entries (i used the "netboot" one) and change it to:
image: http://ports.ubuntu.com/ubuntu-ports/dists/natty/main/installer-powerpc/current/images/powerpc64/netboot/vmlinux initrd: http://ports.ubuntu.com/ubuntu-ports/dists/natty/main/installer-powerpc/current/images/powerpc64/netboot/initrd.gz args: ro video=720p ps3fb=4M
You can use any other release instead of natty, of course - as long as there is a powerpc64 port.