http://www.smithsonianmag.com/smart-news/weve-put-worms-mind-lego-robot-body-180953399For me it will be the full transisting of human minds into computers. It's already started with simple worm brains, and it works... It's viable, we just need computers strong enough to emulate a whole human brain. Shouldn't take too long, few decades maybe. Exciting! :)
It just makes me sad when a great mind dies, like recently say Terry Pratchett or Leonard Nimoy, before we get the chance to upload them :(
PS. I am a scientist