In the age of social media, everything is about attention span. The ones who have the most engaging openers will more likely thrive. Somehow, this logic can also be applied to movies, and the best of them do not wait around to make an impression. There are action movies that set up the stage early on in the film and not in the traditional, expositional way. Some of the most iconic moments in action cinema happen before we even start our popcorn, and the greatest openings show you what kind of ride you’re in for.