First one I recall was in 1988 in Hamilton, ON and just before the meeting was about to start there was an announcement, "Anyone who has their car parked on the right side of the parking lot, please move it. The house next door is on fire and the firetrucks need to get access." So, of course everyone runs outside to see the house on fire. This was especially hard because the person who lived in the house was a JW who donated or sold (whatever) the land to the congregation. As I recall he was taken to the hospital with smoke inhilation and his non-JW son who I had heard was rumoured to have started the fire had major burns on his hands and arms. He showed up at the meeting a couple Sunday's later with bandages all over his hands and then we never saw him again. The meeting started a bit late that night (needless-to-say).
Another time, my brother puked during the CO's talk in a full hall. Of course we were sitting right at the front and it was ALL over the place.
At an assembly in Dartmouth, NS, one of the local apostates (crazy, crazy man even the non-JW's would kick them out of their places) walked across the ice level of the arena wearing a Burger King crown yelling, "I'm your king! Worship me!"
Kwin