from GamecubeLinux Wiki

And last but not least, we have finally run natively Linux on the Nintendo Wii through Team Tweezers’ twilight-hack (http://wiibrew.org/index.php?title=Twilight_Hack). We have released a small usbgecko-enabled Proof of Concept (http://downloads.sourceforge.net/gc-linux/wii-linux-PoC-0.1.tgz) mini-distro to prove it. Did I say have fun? :)