When have you been most scared? (Possibly TMI)

[bifar]

I saw a thread on Snopes about this, and it was something I’d been meaning to ask, so eh. When was the most terrifying moment of your life, and why?

I can only think of a couple (thank goodness):

- First driving test. I wept and wept. Of course, I failed. I was SO happy to get out of that car.

- One night alone in my room I was absolutely convinced someone else was in with me, breathing. I sat up in bed, thinking that I must have imagined it. I heard the breathing sound again. I was so scared I wanted to vomit, and suddenly understood why people do that in movies when they see a dead body.

Yes, mine are pretty crap and not very serious. Got any better ones?