Hmm, things brought up by all the recent posts:
Firstly, I find it interesting that my dreams never seem to catch up with my real life. I will dream about recent things, say when I was playing a WWII flight sim, I had a dream about being at school but at war, with all these enemies dropping down on parachutes and having to fight, though my gun jammed and I had to hide behind the neighbours greenhouse. But, this all took place at the school that I was at eleven+ years ago. Even if I dream about people I know now, they will tend to be put into a place I haven't been in a long time.
As far as the vision stuff goes, it's kind of hard to tell with me, since I have had many sleep related problems. I used to sleep walk terribly. My brother's favourite story of me as a very young child, was when I walked through the living room one night, completely oblivious to any reaction from my family, continues to the kitchen, opened the drinks cupboard and peed in it. All completely unconscious. I spent many years sleepwalking a lot, but then also had problems like sleep paralysis, where you wake up and can't move or speak. This was probably the most terrifying thing for me.
I also went through a period of sleeping with my eyes open, which tended to cause people to assume I had just died, and consequently woke me up freaking out. Which was a good thing cos my eyeballs got kinda dry.
I still have very odd dreams, most of which never make much sense, and will blend many different places and people together, often including things like hedgehogs walking through little cat flaps in queues.
Also though, as I say, it tends to be about women, and I always wake up somewhat depressed by them. Damn my pysche.