I can't top the last one, but one happened to me last week
while taking "before" pictures inside a large Victorian
building as it was being prepared for asbestos removal and
renovation. I had crossed about 100 feet of deep mud in the
rain in street shoes to gain access to the basement to
complete the work (after photographing the upper four floors
the day before). After working my way through the maze of
rooms (some full of old machinery and/or stored items) and
confusing hallways in near-total darkness to begin work
(some asbestos barricades were already up, and some doors
that appeared on the floor plans had been covered years ago),
I reached the far end of the basement and began to photograph,
using my flashlight (torch, for you non-US folks....;-) to
light the subject for framing (30 seconds at f5.6 with a 20mm
lens, plus a TTL-flash pop with ASA 400 negative film was my
guess-exposure for the gloom [it worked]). After a couple of
pictures, I dropped (and broke) the flashlight. Lack of time,
and reluctance to cross that mud twice again, argued for
continuing without the flashlight. Needless to say, framing of
subsequent photos became less-than-precise (and finding my way
back out of the basement became interesting, at times.......).
Hope This Helps