Geez, I was hoping for some good stories. I guess I'll post one or two.
Like the link Curiosity posted, youoften get the feeling that someone is there, or you do see someone. One time, I dreamed that my friend came over. He rang the bell, I looked out the up stairs window, felt the cold air, saw him and said "come on up". He came up, had a conversation about what I had done over the week end and he left. I woke up really confused, thinking 'was that in my sleep". It's very real and very vivid.
Another time, I actually left my body and saw myself sleeping. Someone was at the top of the stairs waiting for me and, after a few seconds a voice said 'are you coming'. I said no, it's too cold outside and went back into my body.
Freaky stuff I tells ya.
Keep in mind the above happens after the paralysis. Every time I experience paralysis (I'm used to it now) I try to wake myself up, think I've woken myself up - only to wake up later.