I was fooling around in Blender and Yafray and suddenly came up with this idea for another Gentoo Linux wallpaper. It was also meant as a test to see if I could replicate the photorealism from Yafray with using only Blender Internal.
As it turns out, for this particular scene, the biggest difference between yafray and blender apart from memory usage and rendertimes is color bleeding. The self illuminated parts glow onto the floor, thanks to radiosity and bounced lighting.
Still, I prefer the blender render, since you can get the shadows smoother in a shorter render time.

This was originally rendered as a dual desktop image at a resolution of 3200x1200, the render time was about 4 hours, using only one Area light set to 16x. No AO was used and OSA was set to 16.