Mike, buddy...

I have good news! I think I've found the answer to your problem! (You know, seeing dead people!) I've discovered that its perfectly normal to experience what is known as "sleep paralysis". Sleep paralysis often is accompanied by hallucinations, like aliens trying to abduct you (ring a bell?) or seeing ghosts or dead people in the room with you. But they disappeared, didn't they, as soon as you became unparalysed? Yes?

Now everything will be o.k. Next time it happens, you will not be scared because you will know it's not real!