He didn't get me this timeIt's the bit near the beginning when you cross a water filled room which has electricity coursing through the joint. You need to get to an air vent on the far side of the room and there's a headcrab inside - he leapt out on the day of release all those years ago and I screamed like a little girl, threw my mouse in the air and very nearly soiled myself.
Yeah Your right, must have got me too as I never enter tight dark places without a heavy crowbar swung back