This happens to me sometimes, but not usually to do with dreaming (although it HAS happened).

Almost always, if I am waiting for something to happen, the moment I decide to go to the bathroom or make a cup of tea, it'll happen.

Sometimes I think, I hope it's so-and-so episode, when I turn on the tv to watch something. And either it IS, or it's the episode i'd have least like to see. Sometimes things are coincidence, and sometimes things are actually quite predictable and you just don't realise.