Hey Skip
Yeah, they are very much obsessive thoughts. Everybody gets odd sensations, thoughts or feelings... some really uncanny or paranormal or whatever. "Normal" people think these things all the time (so you and me are both normal). However most people just laugh, but the thing about OCD is that it attaches a signifcance to these thoughts, we obsess about em, and it freaks us out a bit. Now if you didnt have OCD I doubt you would have thoguht twice about that movie, right?
I remember once when I was younger... I could have SWORN I saw something move in a picture. It scared the hell out of me. Then because I thought about it, I kept experiencing things like that all the time. See how the brain does stuff to us?
Paranormal thoughts, magical thinking, being scared of being possesed, being fearful of blasphemous thoughts... its all very much the same thing in OCD. While a large part of OCD is physical in origin, some of it stems from the fear of not having control of things. Thats why we get scared of paranormal stuff, what MIGHT happen in life, doing things RIGHT, etc. We are control freaks, buddy.