If I could get away with a miniseries, James Burke's Connections.

Or Cunk on Earth. It's a toss-up.

Doctor Zhivago. And when they inevitably fall asleep. I’m jacking that Ufo.

Obviously the greatest documentary ever committed to film: The Adventures of Buckaroo Banzai Across the 8th Dimension.

District 9

Letting them know what mankind is all about seems like a terrible idea. We're jerks.

The Day the Earth Stood Still (1951) - Literally telling aliens that we will fuck shit up.

Stalker (1979) - You can leave your garbage and we'll think it's treasure.

Dude, Where's My Car? (2000) - Humanity is really just a bunch of idiots, stumbling through everything.

shrek 2

Double Feature: Ender's Game (2013) and Starship Troopers (1997) - then we serve them a sumptuous shellfish tower to discuss their surrender over dinner.

Wall-E. Sums it up pretty well

Full Metal Jacket.

Hellraiser II

gremlins 2

Samsara

Superbabies: Baby Geniuses 2 (2004)

Salò.

Half Baked

Fun fact: I have watched none of the movies listed here in the comments

Shawshank Redemption

“The Final Member”

It’s a documentary about the worlds first penis museum in Iceland trying to finally secure a human specimen

https://youtu.be/sZMaheZ_Iy0?si=SCIxh2weymwp3AOk

Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb.

Earth Girls Are Easy

End of ze world.

Freddy Got Fingered (2001)

Rocco's Animal Trainer #3.

They Shall Not Grow Old (2018) by Peter Jackson.

Nobody has mentioned porn. We try and say things in our great works of art but maybe they'd learn more from what we make when we're trying to say nothing at all.

Either point break or bad boys 2.

Samsara

A youtube compliation of high tension powerlines exploding.