When I was about 5 years old I was sleeping in my sister's old bedroom that I just moved on. I recall having terrible nightmares where I was in that exact same room against the wall while a monster-like creature is clawing at me. I would wake up sweaty and sore but in the comfort of that bed.
These dreams continued for a numerous of years, until I switched out of that room into the bigger one. Eventually I had to move back in there because my sister wanted to move back into my parents house. I was then about 12-13.
A week or so after I moved my things in and got myself comfortable I fell asleep. This is when I started well.. what seemed like I awoke but my body couldn't move very well. I heard whispers and threats. All I could do in these "dreams" were scream. Very loudly. I would then attempt to use every bit of muscle and strength I had (which was none) to crawl out of my bed. I would usually fall on the ground, unable to move. I would still hear that voices, see terrible faces in the dark, and wake up on the cold floor in my bedroom.
I have a few others but I'd like to see if any of you have any good ones.