With three cats to knock things over, of course I hear noises in the night!
I think that one of my my most alarming moments in bed though was actually in the morning, when I lived in Sheffield. From time to time I would dream that I could hear someone coming up the stairs but I'd always wake up before they got up to my bedroom, so that I could breath a sigh of relief. However, on this occasion, I found myself dreaming that somebody was coming up the stairs, woke up and could still hear the footsteps!
My mate, knowing that I was a late riser and also that my neighbour had a spare key to my house, had borrowed that key and was bringing a freshly-made cup of tea up to me. He nearly got it thrown all over him for scaring the life out of me!
;-)