For me, I've slept through numerous earthquakes that have knocked many things over. I'd wake up, and be like, "what the fuck, why are all the picture frames on the wall crooked, why is shit all my shit knocked down? WTF" kinda thing.
The other when I was little and shared a bunk bed with my step brother. I slept on the top part of the bunk, and one day I woke up sleeping on the floor. My step brother said it was the funniest thing that he has ever seen. Apparently I fell, fumbled around a bit in my sleep, and just fell right back to sleep.