Several times I was caught sleeping at work, right at my desk. It was embarrassing and I did eventually find out that I had a sleep disorder and now I have it under control. No more sleep deprivation and no more falling asleep at the drop of a hat. Movies were a rather big pain since it was dark and I was sitting still.
However, I also developed a problem with caffeine during that period. I drank tons of it all the time, and once I discovered that I could by cases of Red Bull at the local membership warehouse store I drank even more, all in a useless attempt to stay awake.
Sometimes there is just too much of a good thing.