This Cubular Scene was created (if you can call it that, it's just cubes!) in Blender 2.25 and Rendered in Yafray, an experimental raytracer / global illumination renderer.
This render is extremely large and took an unknown amount of time, less than six hours.
Screenshot 1 is 1600x1200
Screenshot 2 is 1280x1024
Screenshot 3 is 1024x768