Unintelligent or bad or evil design? An imperfect god using evolution leading to dead ends where there's no way back for better construction?
One of my favorite examples is the human eye. Compare it with a camera and imagine some engineer designed the camera in such a way that the wires taking the information to the memory card were drawn on the front side of the image recording element (ccd) thus creating a blind spot in the image... What would be an acceptable excuse for such design? Designed by a comittee, perhaps?
"Creationists often cite the human eye as a model of perfection... And the human eye is far from a model of perfection. In all vertebrate eyes the wire from each of three million light-sensitive retinal cells passes in front of the retina, and the collection is bundled into the optic nerve, creating a blind spot. This set-up is just the reverse of what any designer would construct: wires leading away from the backside, not light side, of the light-sensitive cells."
This and more: http://www.csicop.org/si/show/neither_intelligent_nor_designed/