There's a pivotal scene in the second season of the Gilmore Girls. This scene is a catalyst for the shifting of some major relationships over the next several months, and the repercussions of this scene are felt directly by most of the main characters for the next twenty episodes or so.
In case you aren't a Gilmore Girls aficionado, let me explain. No. There is too much. Let me sum up:
This is Rory:
At the time of the scene in question, Rory is dating Dean:
But Rory has a crush on Jess:
Jess is the nephew of Luke:
Luke is friends with Lorelai, who is also Rory's mother:
While Dean is out of town, Rory is tutoring Jess. He doesn't need tutoring, he just wants to hang out with Rory. And she enjoys hanging out with him. They go for a drive. During that drive, he acts like a normal teen boy, driving competently but carelessly. Rory plays along and asks him to keep driving, instead of going back home to finish their homework.
And then they get into an accident.
But here's the kicker: We don't see the accident.
We, the audience, don't even see the moments leading up to the accident, or a police officer describing the scene, nothing. We are given after-the-fact accounts from Rory and Jess, and we are given reactions from Lorelai and Luke.
You, the viewer, are forced to invent the narrative for yourself. You are forced to take what you know of the characters and sort out the truth and decide how you feel about everybody in the situation as a result.
You could believe Rory, who doesn't lie and says Jess didn't do anything wrong. But she's biased because she likes him.
You could believe Jess, whose story not only matches Rory's, but it also very plausible. But he has a vested interest in - and a history for - lying.
You could take Lorelai's side because she has a point: Jess is reckless and arrogant and dishonest and there's no real reason to believe him at all, ever. But she's sees nothing good about Jess, no matter what evidence is placed before her, and frankly, she felt the same way about Dean at the beginning, too.
You could take Luke's side because he knows Jess better than anybody else, but he also has been wrong before.
But we never see it happen.
So what can we learn from this?
Sometimes you need to skip over the "important" parts. Sometimes that's what serves the story best. Harry kissing Cho. The "morning of" in GONE GIRL.
I'm sure there are more scenes like this, but they're hard to think of because their absence is just so... right.