I've just been reading about ReactOS, a freeware, open source operating system that's intended to be totally compatible with Windows. At the moment it apparently runs some games and programs, such as Deus Ex, Quake 3, and Unreal Tournament (plus Half-Life, but it apparently has bugs at the moment), and is very light on resources, so it sounds like it might be great for the XBox.
I've tried searching xbox-scene's forums, but the only references to ReactOS I can find here are from years ago, but it's modern versions of ReactOS that look so promising, so would anyone with the XBox skills and knowledge be willing to consider porting a modern build of the OS to the XBox? Like, I imagine, most XBox users here, I personally wouldn't use it as as OS as such, just to load and play various Windows games, so I think most users would be happy if the OS would work with the games, and not bother about things like network support, internet access, etc.
If it could be used to allow us to play Deus Ex, Unreal Tournament, Half-Life, etc, on our XBoxes, then that would be wonderful, and would be a very fitting way to mark the XBox's tenth anniversary.
http://www.reactos.org/en/index.html