Last night, I got tired, went to bed early (for me), and fell asleep so suddenly I neglected to put in earplugs. Woke up at 6, did some stuff online for an hour or so, started to work on photo project, suddenly felt very sleepy again.
And for the next three hours or so had a succession of dreams in which I was at home on a weekend afternoon and a bunch of friends were coming over for various reasons but I kept falling asleep for hours at a time and they were sitting around disappointedly waiting for me to wake up.
...also there were a couple of long vivid movie-related dreams. I'm not sure what was up; I've been sleeping pretty well this past week, and getting plenty of sleep, and yesterday was not a particularly strenuous day, but it kind of felt like my body was telling me that I was exhausted and desperately in need of lots of sleep. I think I ended up with something like 9 hours of sleep, which is pretty much unheard of for me, and am still a little sleepy now that I'm up.