4. Terminator 2: Judgment Day
I don't know who this character is, wandering into shot in the most casual way possible, kind of oblivious to the fact that a SWAT team are trying to take down a robot from the future in front of his very eyes. Oh, well. If you watch this scene in the actual movie, you'll notice that this person - dressed in casual attire, assuring us that he's not supposed to be where he is at this moment in time - just inches into frame and observes the action like it's nothing out of the ordinary. And maybe it isn't. We don't know this person. I mean, who are we to judge?