I heard an amazing case a couple of days ago about a woman who had anterograde amnesia, being unable to form new memories, but retaining memories prior to a certain date. She was woken up during REM sleep and asked about the contents of her dreams: her report would often contain details of events from the day before. However, when quizzed as to the events themselves, the woman had no memory of them or what they were about. Just think the implications of that through...

What do you think of this, and do you have any other similar cases?

Another amazing one I know of (with a plausible explanation) can be read about here: Capgras delusion - Wikipedia, the free encyclopedia