Trailers: you know, those fast-paced two-to-four-minute theatrical promotional shorts that have preceded the feature attraction since the dawn of sound? They’re an exciting montage of all the best parts of a movie the exhibitors want to show you in order to get you to see the film . . . full of swirling letters screaming hyperbolic promises of: Thrills! Action! Mystery! Romance! All the highlights of a whole picture are packed into its own mini-movie in just a few minutes!