It defies understanding why one wouldn't start with a much simpler organism rather than trying to go directly to the human brain. For one thing, you can actually experiment on, e.g., a rat brain in a way that you can't on humans.
More great stuff about the robotic embodiment of OpenWorm:
http://www.i-programmer.info/news/105-artificial-intelligenc...
https://news.ycombinator.com/item?id=8745639
Eyewire.org is also really cool -- for example, they have already made an important discovery into how our eyes detect motion: http://www.scientificamerican.com/article/online-gamers-help...