Yes. I work in a NOC (network operations center) and I love my job, but at times there is lot of overtime as we've been short staff. At one point I worked like 4 consecutive weeks with maybe 3 days off in there. Some 8 hour shifts and some 12's. Worked all weekends too. Basically the job is to monitor stuff, if we get alarms we can login to certain things to see if we can clear them. Some things we may have to call out people on, etc. It's pretty much the thing of reacting to whatever goes on. One of the critical pieces of equipment we monitor is the DMS telephony switch for the whole region. While the job is relatively easy it takes some alertness. You can't wander off and start surfing the net too long, have to continuously look at all your screens to scan for any new alarms.
One night after a long set of 12 hour shifts and more starting the next morning I wakeup suddenly with the thought "oh crap! I need to be monitoring alarms!" It was also raining extremely hard outside so my first instinct was that I should probably take a walk to the DMS room and rest of the building to double check there's no roof leaks or anything of that sort, as it's happened before. My blackberry was on my nightstand so I picked it up and looked at it, and it was the DMS terminal, no alarms, so I set it back down. Clearly this part was some sort of dream. As I lied there it was raining so hard I actually got up to go check on my own equipment downstairs, but I procrastinated a bit due to being so tired and still half asleep. I was still stuck between some sleep paralysis land, and real life. I actually ended up getting up to go check my stuff downstairs. Only at that point was I fully aware of the fact I was at home and not at work.
Ironicly when I got to work the next morning there was water in a few equipment rooms. Was the weirdest thing ever.