It's a common occurrence in movies for characters to talk aloud to themselves when no one else is around. This stems from theatrical plays, a method that allowed the audience to be aware of a character's thoughts (Hamlet's "To Be or not To Be" soliloquy).
On few occasions, however, does this come across naturally. Last week I watched Halloween (1978), for instance, and Laurie talks to herself several times, saying "Well, kiddo, I thought you outgrew superstition" and "The old girl scout comes through again". Another example that always takes me out of the movie is Trinity's "Get up Trinity. Get up!" from The Matrix.
Does anyone really talk like that? Sometimes silence, as Nooj's thread demonstrates, is a more effective tool.
There are times when a character talking to themselves does work. Brody mumbling '"Slow ahead." I can go slow ahead. Come on down here and chum some of this shit.' in Jaws springs to mind, because it's done in a passive-aggressive way for the other characters to hear it.
So what are the most natural and most unnatural instances of a movie character talking to themselves? Does it benefit the plot, work as characterization, or is it unnecessary exposition (ie. "Workshed")?












