I tend to have two types of dream: 1) shitty hollywood jurassic park dream (ie the not being able to run away fast enough dream), and.. 2) the super horrifying dream: usually involving slit throats, my brother dying (usually by falling off a cliff), a woman with a black mask - think of the stabbing scene near the end of Saving Private Ryan but x100 factor awfulness. This one is always in daylight, involves sand (or maybe a desert), and usually a tram/train.
I hate those ones.
oh and I almost always have the "falling" sensation where I physically shudder, thinking I've hit the ground.
Also I have really awesome jewel thief dreams, or Con Air.