An interesting look into the role of voiceovers in film.
The most irritating thing about The Great Gatsby (which I mostly enjoyed) was Tobey Maguire's voice-over. "He had the kind of smile that seemed to believe you, and understand you as you wanted to be believed and understood," says Tobey over a shot of Leonardo DiCaprio giving us exactly that kind of smile. And then, later, "Gatsby looked in that moment as if he had killed a man," Tobey says over an image of DiCaprio looking - yes! - exactly like someone who had killed a man.
As the popular screenwriting slogan has it, "Show - don't tell." Just because the story is told from one character's point of view doesn't mean you have to hear that character's voice blathering in your ear all the time - look at Chinatown. Voice-over narration is pointless when it's adding nothing to what we can already see for ourselves, but it does have its uses.