I get de ja vu sometimes, and the feeling is nearly inexplicable - it's vague but oddly familiar, like you have "been there" or "heard that" or "seen this" before, but you're not sure when or how or where, like a badly remembered dream, or semi-conscious day dream. It's bizarre, and sometimes unsettling.

I would love for science to be able to explain this. Is it memory-linked, or is it random subliminal brain activity?