John Pezari brings us the award winning idea of restoring images through brain stimulation:
Check this article about it on scienceblog!
Or find deeper info in his paper:
Pezaris, J. S. & Reid, R. C. (2007). Demonstration of artificial visual percepts generated through thalamic microstimulation. PNAS doi: 10:1073/pnas/0608563104. [Full text]
Also interesting in this context is this article about Channelrhodopsin restores vision in blind mice.