The walking in circles bit is just uncanny. My most creative thinking (or most vivid daydreams) happen when I'm doing exactly that. It's really weird (and I'm acutely conscious of how it must look), so I never let people catch me doing it. Something about walking in circles turns up the realism an order of magnitude.
I think this is highly related to my ADHD, and now I want to tell my doctor about it. I don't want to rid myself of this, but I do want to control it better.