It wasn't me personally but I was working as a temp at one of the world's biggest shoe distribution centers when a guy accidentally made all of the size 10 shoes start coming out onto the conveyor belts. Apparently it wasn't a simple thing to stop it and for three days we basically just stood around while engineers were flown in from China and the Netherlands to try and sort it out. The guy who made the fuckup happen looked totally destroyed. On the last day I remember a group of guys in suits coming down and walking over to him in the warehouse and then he didn't work there any more.
It must have cost them an absolute fortune.
No idea. It was a new facility, so maybe it was a bug in their new system preventing them stopping it! I was 18 at the time and found it hilarious. They kept us there the whole time because they thought it would be quick to sort out. We shot each other down roller conveyors, rode the pallet trucks around like scooters and smoked cigarettes inside big cardboard boxes while we were waiting. Good times.