My limited exposure to psych makes me think that this is really cool: Scientists Gain Insight From Man's Vision (washingtonpost.com). The guy had his sight restored after 40 years of being blind (he lost his sight when he was 3), which is leading to a lot of discoveries on the development of visual processing in the brain. He is able to sense color, motion, and basic shape, but he not able to recognize objects or people. It remains to be seen whether or not this part of his visual system will develop, or whether its lost to him for good.