It's non-fiction but it's so wild that it might as well be fiction. I, like you, don't really care for much non-fiction but this was a page turner. His writing is excellent.
"The Man who Mistook his Wife for a Hat"
From a review in amazon:
"It is utterly fascinating to know that, as a result of a neurological condition, a man can actually mistake his wife for a hat and not realize it. It is also fascinating to learn that a stroke can leave a person with the...