No particular order. Also, it’s movies that I watched, can’t speak on essentials that I might be missing.

It’s kinda hard to make a list on essentials tho. Because your personal taste obviously plays a big role. I can’t see my girlfriend liking more than 10 percent of those…

Schindlers List

Gladiator

No country for old men

The grand Budapest hotel

The big Lebowski

The Fellowship of the Ring, The Two Towers

Star Wars (the original one)

Requiem for a dream

Pulp fiction

The good, the bad, the ugly

The lives of others

La vita é Bella

All quiet on the western front (1930 version)

The dark knight

The Truman Show

2001: Space odyssey

Alien

7 Samurai

Princess Mononoke

Trainspotting

Boyz N the Hood

Scarface

The Godfather 1, 2

The Matrix

Clockwork Orange

Shutter Island

Kingdom of Heaven

Wolf of Wall Street

Honorable mentions because they are popular and everybody always talks about them (I like a lot of them, too. Don’t consider them essentials tho):

Inception

Interstellar

Fight Club

Harry Potter

Return of the King

Rest of Star Wars (whatever people consider the good ones at last)

Saving Private Ryan

Django Unchained

Toy Story

The Lion King