I can dream about whatever I want. I am able to control my dreams, and I usually realize mid-dream that I can really take control. Mostly I fly and do all sorts of creative things.
I have a recurring dream that I have been dreaming for 15 years, which I have no control over. I dream about a small device consisting of long, sharp razors making up a frame. I step on it, turn my head down so it does not cut me and I start walking with it feeling extremely calm.