A few years ago was just about to board a BHX-AMS flight when it was struck by lightning (i.e. whilst it was still on the ground) - had to delay boarding, then were directed to another flight.
(On a side, I've seen a lightning bolt descending from the cloud base, then take a 90-degree turn into a mountainside, and a lightning strike out of blue sky some 20 miles from the nearest cloud).