In the 1980s I was once doing radio coverage of England vs. Sri Lanka at Taunton, a One-Day International.
I had the Radio 2 live commentary and Ron in the other van was doing occasional injects of score-plus-summary into the World Service. Being senior, Ron had the bigger truck(!) although I was busier than he was, but to be fair neither of us were exactly stretched - mine was a little Commer van with a raised roof, and probably over spec. for the task even then.
For anyone that knows the ground, the old commentary boxes were opposite the new (present pavilion). We were in the car park behind. Telly were on the far side from us in the pavilion car park, but an awfully nice Acton chap turned up with a bit of coax and a monitor, so I could see the action in the van (I think they had a feed in the commentary position too.
It was weather not dissimilar to now. Ron had a decidedly 'liquid lunch' and having spent a lot of the morning enjoying the sunshine outside the van, disappeared inside, to survey the insides of his eyelids for a while. I was too busy to doze off or read a book, but not quite busy enough to not be bored.
So I was watching the monitor and heard the commentators react: I'm afraid I can't remember who was batting, but the ball soared over the stand, and landed almost vertically, plumb centre on Ron's roof.
I've never seen a large OB truck like that shake about so much. Within seconds the door flew open and he fell out onto the car park.
Amazing powerful things, cricket balls.
E.
Later: just Googled it: 11th June 1983 - there were ten sixes in the match (England won, just about), but I can't remember who hit the big one.