I do all the time. I'll be doing something then feel like I've been in that same time and place before then think it's weird and continue on with what I'm doing.

With dreams. I have the same dream over and over again. I think sometimes it's the universe's way of telling you something while other times it's just you over thinking a dream so you have it again. It depends on the situation. It creeps me out when I have a dream and something in real life happens shortly after that has to do with the dream. I have that happen a lot too.