Non x-86/Mac-PPC Workstations?

Aknaton asks: "As I begin to plan for my annual fall purchase of new hardware, I would like to try something different. I have already owned several PPC Macs running MacOS X and many PCs but they still leave me wanting more. I have begun looking for non-Apple/X86 alternatives but I am not finding much. SGI still makes machines but they don't even list prices. Sun offers the SunBlade 100, for just under a grand and it is a consideration. Can anyone else suggest, or know of, any other options? Or is it just a PC world after all?"