Dr. Dave pointed me out in comments to MintPPC which I used briefly and forgot to write about. Dave says it's the future of powerpc, and I'm prone to agree with him. Basically it's an out-of-the-box-everything-just-works distribution that ports the Linux Mint Debian distribution over to PPC and includes some fixes specifically for PPC hardware. These are features Debian's main distribution makes you enable manually, giving birth to some of my more verbose and prose-award worthy blog posts, specifically wireless, graphic hardware rendering, and sound.
Wireless on an original Airport card and some hardware rendering don't work out of the box in Debian because of licensing issues, and sound doesn't work apparently out of ultra caution about some bug in the past that may not even exist anymore. But instead of making you, the user, muck around forums and horribly written blogs looking for answers, MintPPC takes care of all these features for you and has them enabled by default. Much easier on the newbie.
When I was using it, I was generally impressed. It has a slick look (screenshots) and snappy performance, and the MintPPC developers have even compiled the newest versions of Iceweasel (Firefox re-branded), something unavailable to Debian PPC users. I ended up going back to regular Debian, though, because I wanted to use Openbox on top of Gnome-core for my iBook install, which you can do on MintPPC but you'd end up with a bunch of Mint-specific software you weren't using. Also I'm a masochist.
So go ahead and check out MintPPC's website. It's completely painless.