I've never had that happen in real life, but I've recently been experience "omniscience" in my dreams. When I'm awake, I do feel that I've already been through situations before (ie. in a dream), but I doubt it. Especially in the past couple of weeks or so, I've been having dreams where I feel that I've been through the exact dream before and know exactly what's going to happen. I believe in the Bible, so I know that prophetic dreams have happened before, but I'm more skeptic about them today.

-AMé