I mostly, when I wake up, remember the entire dream I had, but seconds later 85 % of it is gone.
Have you ever tried whirlpooling?
If not, it's when you dream that you're dreaming that you're dreaming etc..
and when you wake up, you might not wake up for real,
do that around 3-10 times and you're easily frightened when you finally wake up(for real)
How about dreaming that you're dying/dead..it's horrible...yet relaxing

...actually it's quite sick, from what I can remember, I only dreamt it once(I was swallowed by a BIG sand worm!) ...yes, I had been playing Final Fantasy X that evening, heh

Flying! I used to dream every night I was flying!
Now it's quite rare(well I wouldn't know, we dream...what is it 1 million different dreams a night?

)
when I was dreaming and flying, sometimes I would fall to the ground, then I woke up! (odd..reverse death :p)
And sometimes I just couldn't fly even though I kept trying, hmpf.
A last thing:
Sometimes, albeit very rare for me now(time ago I had it every night) I would get paralyzed in my entire body when I was -about- to fall asleep, meaning that I -WAS- awake when it occured(yes, eyes open too), I couldn't even breathe when it happens, it lasts around 7-15 seconds and I had to struggle hard to snap out of it.
That's just a small portion on the subject of dreaming.
