Two things happen to me often. Sleep paralysis where I know something evil, usually a banshee or something OMG TOO MANY RPGS!!! Is about to kill me, so I lay silent like hoping it won't notice or something. And then right before I die I scream and run, only neither happens, and I just lay there awaiting duh duh duh certain death (for all you David Bowie fans).
Its terrifying.

The other thing that happens is I have these VIVID hallucinations. Like the other day, I got up and got this coke form the fridge...And got back in bed...The damn thing was so cold. But what was wierd about this trip was that I saw my cat on the way to the fridge. Wait a second...I don't have a cat. So I'm pondering all this and my hand is under the blanket with the ice cold coke...I can see the imprint in the blanket and everything...Then I decide I'll take a drink to wake up a little and forget this whole cat business. So I pull my hand out form under the blanket and there is nothing...

What is interesting about it is that I didnt go back to sleep before I realized I had been dreaming...Wierd.