Came here to say that there was an earthquake in the UK a number of years ago that I remember woke me up (for about 10 seconds - I sleep like the dead). My then girlfriend crapped her pants and was up for hours afterwards. I remember her sqealing "what was that?!!" and I apparently mumbled "...earthquake?" and went back to sleep.

I remember it feel like someone was stood at the end of the bed shaking it though.