Some language and violence:

- Maybe my personal favorite: in Night of the Hunter, when the false preacher is singing "Leaning" and Lilian Gish's character, who is protecting the kids he's trying to catch, starts singing "Lean on Jesus" back at him while cradling a shotgun in the front room — "It's a hard world for little things" — magnificent movie:
https://www.youtube.com/watch?v=JyxSm91eun4

Some others

- On the Waterfront - "I coulda been a contender" — I'd read it a bunch of times, you have to watch the movie to get how much of a gut punch the scene is:
https://www.youtube.com/watch?v=uBiewQrpBBA

- Sherlock Jr - the whole sequence of stunts in the motorcycle scene:
https://www.youtube.com/watch?v=Cp5fTvEWdh4

- Snatch - the last boxing match and its aftermath:
https://www.youtube.com/watch?v=DOAzFqU9EXk

- In the Name of the Father - final courtroom scene:
https://www.youtube.com/watch?v=yUjOZr0-tss

- Phoenix - The ending, when the husband realizes the truth:
https://www.youtube.com/watch?v=IaMarb7pLFU

- Man from Snowy River - The big chase and the ride down the steep slope:
https://www.youtube.com/watch?v=fAEIbUmhloM

- The Castle - Courtroom scene arguing the unconstitutionality of the eminent domain taking ("It's against the vibe of the thing"):
https://www.youtube.com/watch?v=wJuXIq7OazQ

- The Protector - The one-take fight scene as Jaa ascends the building:
https://www.youtube.com/watch?v=Bqw369ZskMk

- Breaker Morant - the execution:
https://www.youtube.com/watch?v=BRLsxkVSH8E

- Truman Show - ending:
https://www.youtube.com/watch?v=-_zYn-HHcyA

- Step Brothers - The catalina wine mixer:
https://www.youtube.com/watch?v=ZR6Z6q8RjBs

- High Noon - final shootout, where no one will stand up to help except the sheriff's Quaker wife:
https://www.youtube.com/watch?v=qZil728hUy0

- Unbreakable fight scene — with Split ending:
https://www.youtube.com/watch?v=YBRmNUxAVYs
https://www.youtube.com/watch?v=eAiILXUdxL0