What movie is an example of a bad idea with a good execution.

Most people talk about good ideas with bad executions but I want to talk about the opposite. What’s a movie that shouldn’t work but does. Something that had no faith in but surprised. Something that has no rights being as good as it is. I don’t see this discussed much so I look forward to see your answers. via /r/movies https://ift.tt/N16YrTF