Work long enough for any company and you end up collecting a bunch of bizarre and/or stupid stories. Here is one of many...
I came in one hot summer morning to find an ominous wet patch on the carpet outside the server room. I go inside and find the aircon unit is spraying a big torrent of water over everything including the main database server. The main aircon unit had failed because it wasn't powerful enough for the load and had an incorrectly installed drainage line. It had been like this for years as well so it was a mystery why it had suddenly decided to just die in such spectacular fashion whilst still cooling.
Everything was still working even though the underfloor area with all the 3 phase cabling was deep with water and the actual servers themselves were getting drenched. I didn't really want to hang around too much too much in there for obvious reasons. I'm sure management would have preferred me to just go running in to save the systems however

I was the first person from IT in at the time as well. I shouted to get a random member of senior management to come over whilst I tried to remotely shut down all the important servers. After getting management approval aka a Get Out Of Jail Free card I isolated the UPS and generator from the server room so we could investigate without getting electrocuted. Meanwhile, everybody else was reduced to the emergency backup of a pencil, a ledger book and a calculator

The disaster recovery plans were put into play and I had to leave for the cold site to bring everything up whilst other members of IT dealt with the impromptu swimming pool and wet servers. Amazingly enough, everything pretty much survived the ordeal. The main casualty was the comfy wheely chair we had in there to sit on whilst waiting for things to complete. The bottom of one of the AS400s got a tad rusty which always gets weird comments from service engineers. The room had a horrible wet musty smell for months afterwards as well. We insisted that management approved a proposal for an environmental monitoring alarm system which they agreed to with no hesitation

The stupid part about this was that somebody had spotted the wet patch outside the door before I had even turned up. They didn't do anything about it because it was ITs problem not nothing to do with them *sigh* We even got complaints from some of the users because they couldn't use the systems. I guess they expected us to just put a tarp over the servers...