http://sploid.gizmodo.com/healthy-24-year-old-learns-that-her-brain-is-missing-th-1633415650 I... am just seriously amazed at this! The Cerebellum is... well, a pretty critical part of the brain. It's as close to a Front Side Bus as the human body gets!
Cases like this are truly remarkable. Here's a case of a man missing most of his brain, yet living an entirely normal life: http://www.newscientist.com/article/dn12301-man-with-tiny-brain-shocks-doctors.html#.VBIHnGfn9y0 Please Register or Log in to view the hidden image!
that is so weird. goes to show we actually do use only a small part of our brain, for most people. we need better stimulation at earlier ages, make the next generation even smarter!