Are you looking to run an OS on it? I think at the moment there is only Linux, but I've not tried it. As for Gamecube on the new Wii. A work around may be on the way. You can still hack them and do everything else though.
Would be neat to see AROS on it.
Of course I'm thinking of an OS.
I've been fond of Nintendo hardware since ArtX was designing their GPUs (ArtX of course was absorbed by ATI, which kind of explain why Nintendo switched to ATI).
And Nintendo's CPUs are basic PPC cores (unlike the exotic Cell related designs of Sony and Microsoft's consoles).
Of course, what REALLY interests me is the possibility of hacking the Wii U.
Power7 based processor? Since MorphOS won't be ported to hacked consoles, AROS would make this interesting.
BTW - What (besides conforming to the Amiga 3.1 API) prevents AROS from supporting SMP and multi-core processors?