Gone Girl

You only have one chance to make a good introduction, and movies like 'GoodFellas' and 'Gone Girl' make it count with their dialogue.

The fact that it opens with a morally corrupt man speaking about the beauty of the American dream flawlessly establishes the movie's tone and critique of contemporary American society. As the plot unfolds, this word will remain in the back of the audience's minds as a journalist (Joseph Cotten) struggles to discover its meaning, so will each viewer wonders what it could mean. Although this isn't technically the first thing that is said in GoodFellas, it is what kicks off the story; no list about the best opening lines in movie history is complete without it. From its first line of dialogue, the movie establishes the dark sense of wonder that will come from the main character's adventure. Keeping with the descriptive and poetic nature of J.R.R. Tolkien's writings, it's a beautiful tribute to the source material that perfectly establishes the epic journey to come. For good reason, many people praise Peter Jackson's The Lord of the Rings trilogy as one of the greatest movie trilogies ever made, for good reason. Lord of War isn't a perfect movie, but its opening line and consequent title sequence sure are great. The dialogue gets us thinking about the underrated emotional impact of music and its relationship to the sadness of those who listen to it. The movie's opening line immediately establishes its protagonist as a rational, cold, no-nonsense kind of guy. I feel it in the earth. I feel it in the water. It's one of the main tools with which the film can advance the story, develop themes, or present characters' emotions.