The brain is a pretty wacky place. There have been many cases of people sustaining brain injuries that changed their personalities, their feelings, or their ability to perceive the world around them. Vilayanur Ramachandran has spent his life studying the brain and the effects of brain injuries. In this documentary, he explores some interesting cases, including phantom limb pain in an amputee and a man who is physically blind but can still detect movement with his eyes.