Oh, this is kinda like the "Close Calls" thread. I couldn't post this experience in that thread b/c it wasn't really all that close. But it was a rock fall.
A couple of years ago I was climbing with my favorite liberal friend, Greg W, at Squamish. I was leading a pitch with a bit of exposure. All of a sudden, that sickening CRACK sound sounded out. I actually scrambled over and scrunched down under a teeny tiny little itsy bitch scrub brush. Even as I was doing it I thought to myself, "Self, this is not going to save you from anything--you are about to be schmeered into the side of this rock forever."
Turns out, the rockfall was right across the gully/chasm from me (loud sound, no rumble on my side). I could see the puff of smoke and the fresh scar. Amazing and beautiful as it was scary.