I was working in a virgin media server suite just off the m4 when they were testing the backup generators, they turned the mains off and all the servers went onto the ups system which promptly crashed.
Turned out the backup generator diesel engine was having an oil and filter change by a nice old boy smoking a roll-up whose van had been parked outside all morning. Took over two hours before they got it powered up again and god knows how long before it was running up to speed.
Lots of cheery virgin types running round with their arses in their hands.
They do have a pro foosball table in the canteen stairwell so at least you know where your moneys going.
I.T. because nobody knew where IT went.