GNU's Now Unix
GNU has won. Unix (at least Solaris) is free.
Tim Bray: I think Sun could legally ship something like this under the name “GNU/Unix”. Which would be concise, descriptive, accurate, and funny. (Because GNU stands for “Gnu’s Not Unix” and Solaris, after all, is.)
I was chatting this over with Simon Phipps and he suggested that GNU could stand for “Gnu’s Now Unix”.