I've died several times in dreams, it always just goes black. - Eaten by shark after falling out of a little boat that I couldn't quite get back in while the shark circled. Last sight was the big open mouth closing down on me. - Big slasher-film villain that looked like a 7 foot tall zombie with a long nazi coat, a shaved head and a scythe as a weapon. I hid in a shed and he burned it down around me and then cut me in half with the scythe. - Nuclear blast in the next town over, the shockwave pushed my car off a bridge while I was trying to escape. - Flying dream where I suddenly lost the ability and fell. I always just woke up from them shaken, but none the worse for wear. And none have come true.