A 4-year-old child is the element from and around which the action develops, and brings sentiments and emotions to light.
Twin Peaks
Zabriskie Point
Mary Jane's Not a Virgin Anymore
Inception
The Wolf of Wall Street
Alien
The Shining
A Simple Favor
The Shawshank Redemption
Fight Club
Inside Out
The Godfather
Shutter Island
It
Inglourious Basterds
Joker
The Prestige
The Devil Wears Prada
Kramer vs. Kramer
Upside Down