Shadow people. I think it has a lot to do with the power of suggestion. Norry said he started at first seeing "shadow rodents" out of the corner of his eye. I imagine it is something to do with a blind spot off to the side of our eyes. I notice I start seeing "shadow rodents" out of the corner of my eye after spending hours at the computer, late at night, while listening to a C2C show on shadow people!
I think you're right. I've heard some people call in and say they've woken up and seen a shadow at the side of their bed. I'm thinking it's from falling asleep listening to C2C.