I predict what's going to happen fairly easily (but I think this is more because Hollywood is really formulaic). I try not to annoy people with that, though. I do lose interest in the movie more quickly when that happens. The more formulaic it is, the more bored I get.
I'm not even sure I can even do this. I don't obsess over predicting the outcome, but really it's the place my mind naturally jumps to, so even if I am not actively 'thinking' about it, it happens.And I rarely even "try" to predict what's going to happen, I enjoy the present moment and watching to see what happens. YEah...
The movies I've enjoyed most have been unusual stories that don't have a typical pattern. Then I can focus on what's happening when it happens.