I had one (This is really scary when this happens to you) where I woke up, but I was paralyzed. You try as hard as you can to move something, but you cant, there were goblins and demons and stuff just haunting all around me, I tried to scream, or lift a finger, but I just couldnt. I then woke up in a cold sweat. That is called sleep paralysis (i think). It scares the shit outta you. And i think its weird sometyime when youre just watching tv on bed and its late at night. Youre in the middle of the bed, but then all of a sudden, you start to fall through the bed, but just capture yourself. It seems like you are falling, but then when you sense it, you stop. Its weird and scary oOo: