A compilation of some of the best acting scenes and/or performances of all time. I know there are many missing. It is just a glimpse. Also, it is a subjective list, I don't claim it to be objectively correct, if there's such a thing.
PART II : https://www.youtube.com/watch?v=QHsdfeE2k5g
Films in chronological order:
Apocalypse Now
Network
Sexy Beast
The Deer Hunter
Aguirre - Wrath of God
The Wrestler
The Great Dictator
Blue is the Warmest Colour
The Dark Knight
Into the Wild
Seven