Here’s a great scene from Sophia Coppola’s The Bling Ring that I think says a huge amount about how not to write movie dialogue. It’s the sort of forced, totally unnatural piece of dialogue that only makes sense in a script, where the writer wants to tell us something but doesn’t know how to succinctly show it. Looking at it on paper, it might not seem that bad. It apparently worked for everyone involved in making the film. But if you read a little between the lines, it’s a textbook example of how not to write dialogue.