Ask Lemmy

Old classics:

• It's A Wonderful Life (1946)
• Citizen Kane (1941)
• Casablanca (1942)
• 12 Angry Men (1957)
• Mr. Deeds Goes To Town (1936)
• Mr. Smith Goes To Washington (1939)

Drama/misc:

• Gandhi (1982)
• Network (1976)
• A Few Good Men (1992)
• The Truman Show (1998)
• Dead Poets Society (1989)
• Pay It Forward (2000)
• The Green Mile (1999)
• The Shawshank Redemption (1994)
• Guess Who's Coming To Dinner (1967)

PG sci-fi/fantasy:

• Back To The Future (trilogy, 1985+)
• E.T. - The Extra-Terrestrial (1982)
• Jumanji (1995)

Action/etc.:

• The Matrix (1999)
• The Terminator (series, 1984+)
• Die Hard (series, 1988+)
• Mission: Impossible (1996)
• Air Force One (1997)
• Independence Day (1996)
• Speed (1994)
• Limitless (2011)

Generally romance-centered (other than Casablanca):

• Titanic (1997)
• Eternal Sunshine Of The Spotless Mind (2004)
• The Notebook (2004)
• Ghost (1990)

Comedies:

• Duck Soup (1933)
• The Great Dictator (1940)
• Monty Python And The Holy Grail (1975)
• Office Space (1999)

I’d add Saving Private Ryan to the list.

The opening sequence is just abhorrent and showcases the reality of war far better than any other war movie I have seen.

Ones I have not seen in other comments, although you probably have enough at this point:

• The Fifth Element - Yes I know the director is a sexual predator, it's still really really good. One of the most creative movies ever made
• Run Lola Run - Surreal modern-style impossible narrative movie from way before movies really did that, also very well done
• O Brother Where Art Thou - Damn, we're in a tight spot
• Schindler's List - Warning, very very very heavy obviously, but there is a reason it won all the awards
• Conan the Barbarian - You may or may not like B movies, but if you like "Sword and Sandal" B movies, this one is the king
• The Sting - Absolutely top-notch gangster movie from before your parents were born
• Office Space - If you have ever worked a crappy tech job this movie will become your spirit animal in time of need

I've also heard great things about "Highlander." Don't watch the sequels.

There are also miniseries. "Stranger Things" season 1, "Chernobyl," and "Game of Thrones" up until about season 5. Yeah, it's a shame they never made any more after that, but you can just let it be. You'll know roughly when. If the three female assassins from Dorne come on the screen, you went too far, just turn it off immediately and be sure to take a shower right away.

Edit: Additions

Modern Times

Psycho

Dark Star

WarGames

Chinatown

1984

Soylent Green

Planet of the Apes

Speed Racer (2009) by the Wachowskis

Flow - if you like cats and beautiful animation.

Dave Made A Maze - is a fun watch with good writing.

Death Of Stalin - will be funny to you if you like British comedy.

Prospect - interesting scifi with Pedro Pascal (who I mistook for Nathan Fillion till I looked the cast up, lmao)

Triangle - well done time travel fuckery

Arq - more time travel fuckery

Primer - yet more time travel fuckery

Edit: pretty sure the title of the post has changed, or I somehow just didn't notice it fully before? Idk, none of the movies I've listed are 'must watch' they're just fun watches. I don't think any film is really a must watch.

Casablanca

Alien, Aliens, Alien 3. Two different movies that are great, then how to make a movie bad.

There are way to few people recommending The Lord of the Rings Extended Editions. I recently rewatched them after not seeing them for a decade and I was surprised by how much growing older allowed me to better recognize the themes in the story. My wife watched them for the first time with me and she said they're the best movies she's ever seen.

Ones I haven’t seen mentioned so far:

• Rashomon
• Dr. Strangelove
• Princess Mononoke
• Wallace & Gromit: The Wrong Trousers
• Ran

Just taking this opportunity to recommend you tengers

A few nobody has mentioned:

• A Mighty Wind
• Best in Show
• Dumb and Dumber
• It's a Wonderful Life
• Moonrise Kingdom

Geez everyone's got a list! I got just one movie I watch over and over.

FIGHT CLUB

Young Frankenstein Labyrinth Last Unicorn Reservoir Dogs The Crow Hard Boiled

• Rubber
• Fantastic Planet
• Willy Wonka
• Heavy Metal

gattaca

matrix

the mask

Brazil
Wings of Desire
Blade Runner: Original Theatrical Cut

Others too obvious to mention... see the rest of the thread.

Rush is probably one of the best motorsports movies out there, definitely better than whatever the fuck the F1 movie was trying to be.

Also try Ford Vs Ferrari that one's good too.

Poor things

Everything Everywhere All At Once

K-Pop Demon Hunters

Black Swan

All I can think of right now.

the thirteenth floor

back to the future

Damn, I haven't watched 99% of these in the comments, I think I might be too picky about what to watch.

Please give this most amazing movie a look: Stay. Very mind bending and great acting by Ryan gosling, Ewan Mcgregor, Naomi Watts.