What is an opening scene- 

Opening scenes are all about setting the scene for a movie, it shows the audience what the film is going to be about; what the film is going to be like, how it is going to be presented, how it is going to be filmed and most importantly setting the scene. Some opening scene's are taken over by the opening credits that show who made the film the production team etc...

I think that the best opening scene's are the ones that start off the story. for example the opening scene to limitless is really good because it shows us what he's life is like before he finds out about the pill that changes his life.