Mandrake Linux 8.0 Final Released For PPC
rstewart points to this press release, writing: "Mandrake has released version 8.0 final for the PPC architecture. Now Mac users have a choice of distributions between Mandrake and Yellow Dog. Now if only we could easily buy parts and build them cheap in our basements. " And PPC choices already include SuSE, LinuxPPC, Debian, NetBSD and more.
Seriously, if you really want a Unix-like OS on the G4, you already have OSX. BSD based and all that good stuff.
Why would you want Linux on there, aside from the lack of good software and geek factor?