I can only remember two dreams that has been so realistic I could feel what was going on.
The first one was pretty fun. For some reason I could fly, but only a few inches above the ground and only if I threw myself off a high building or something of the like. I could remember being so horribly scared every time I was about to jump, then the joy when I realized it was going to work this time too. Yet I could never do it when someone asked me to. I can still think back at that dream and actually remember how it felt to fly. Freaking wonderful.
In the other one I was for some reason a male police officer who was investigating something in a whorehouse. I fell in love with a male prostitute there. Stuff happened. Ahem...
Still, it was so realistic I keep wondering if it hasn't actually happened to me at some point. I believe in reincarnation.