The specific visual moment which is always there without fail when a specific story is being told in any adaptation

1. The T-Rex looking up at the sky as a meteor streaks through it with the "Oh damn, we're screwed" to show the dinosaurs getting extinct story.

2.Martha Wayne's pearl necklace shattering and the pearls falling onto the pavement as Bruce Wayne's parents are shot by a mugger to showcase Batman's origin story.