I have never had any kind of control over what happens in a dream but there are two recurring "lucid" situations that pop up in a lot of my dreams.
The first is a sort of sense of amazement at what ever is happening in a dream. It's almost like I am experiencing the dream from 2 points of view, one of which is just a kind of spectator who is aware it is only a dream. This is kind of hard to explain but the feeling I experience at those times is a kind of wonder or awe at the inventiveness of my sub-conscious. Kind of like, "Wow, how did I come up with this?"
The other recurring situation happens when ever I try to read anything in a dream. I can't read in dreams. Signs, menus, newspapers, etc all contain gibberish in my dreams. They seem to be english words but they are disjointed and nonsensical (kind of like the nonsense strings you find at the bottom of spam emails). I sometimes feel a sense of frustration at first but then I'll realize I am dreaming and remember that I can't read in my dreams.
I am curious to know if anybody else ever has experiences like this.