The Princess Bride. It has great comedy, action, and romance. It’s influenced my sense of humor and it’s just so much fun.

My favorite is The Fifth Element. Love it. Another great movie is The Apartment with Jack Lemmon and Shirley MacLaine

The cinematic masterpiece form 1999 starring Brendan Fraser and Rachel Weisz "The Mummy"

Peter Jackson's Lord of the rings fellowship, two towers, and return of the king extended editions.

It would have to be Back to the Future. I’ve lost count of how many times I’ve rewatched those movies. I also just saw the broadway musical version of it as well. If I had to choose between the three, then it would have to be the second one. There is so much iconic imagery from those movies, and I loved getting to see parts of the first from from different POVs. It has a great mix of many things that people can enjoy.

Snatch is outstanding. The scene with a replica gun vs deagle, the robbery by noob thugs... I laugh even at my memories of them.

But I'll take Shawn of the Dead. Cool direction and awesome cast making a great apocalyptic comedy movie. It's humor may be too dry for some, but if you are into this kind of jokes (is it brittish humor?), it'd blow you away. Watching it with my buddy back then made some of it's gags into our convos.

A toss up between Hayao Miyazaki's Spirited Away, or Eternal Sunshine of the Spotless Mind.

In Bruges.

Hot Fuzz. I think to me it's a perfect movie. So much great build up, very funny. Just so good.

12 angry men

I’m going to admit to some movie watcher crimes, i haven’t seen any of the godfather movies or the older classics like clockwork orange. However, of the movies I’ve seen it’s gotta be Shawshank Redemption for me. Beautiful movie everything about it hits so well.

The first Matrix!

The Big Lebowski.
I lie to people about how many times I've seen it because I don't want them to think I'm crazy (if you though about a number, it's more than that).
Every line of dialogue is simply a masterpiece.

It's a tough call between Fight Club and the Matrix. But id have to give it to the Matrix. That was groundbreaking and it still holds up.

Aliens. Ripley and Vasquez are some of the best female action characters (with the alien queen coming in a distant third). The corporate claptrap from Burke and the setup of the mission is solid 80s cyberpunk. Every character has a great arc (except Burke - fuck that guy). Effects are amazing. The soundtrack is perfect.

It's an incredible action movie.

Tremors. It's just pretty much flawless.

5th Element. Multipass. Super Green.

Hot Fuzz. Every time you watch it, you discover some new joke or callback.

The Hunt for Red October

For me, I think it has to be Pulp Fiction. I just recently rewatched it for the umpteenth time and it’s just as great as ever. I find myself quoting it quite often.

A bit of an outsider which is a big hit in my family is “A Good Year” by Ridley Scott, staring Russel Crowe. It’s a nice fun movie and for a family of francophiles like mine it’s a great way of getting a bit of the France we love in the middle of the dark Northern European winter.

Monty Python and the Holy Grail, hands down. As many times as I've watched it, I can still sit down and laugh my ass off watching it again.

Brazil. Directed by Terry Gilliam, with a great cast including Robert de Niro

Ok, maybe it's not my all time fav, but it deserves a mention

Trainspotting! I've watched it an uncountable number of times. Fantastic soundtrack, great actors, great story.

I'm really surprised no one has mentioned Lock, Stock, and Two Smoking Barrels because I think it's actually the better of the Guy Ritchie movies in this style. It's stylish, perfectly-paced, and has the perfect "I think we...won?" type resolution at the end.

Lock Stock is one of my favorite movies

The first half of Scott Pilgrim vs The World

Snatch is such a great movie. For me it’s too close to call between Snatch and O Brother, Where Art Thou?. It took me a long time to realize that John Turturro was even in the movie because his acting is so out of character and well performed.

Haven't seen it mentioned yet, Children of Men

Jurassic Park. I love movies that starts calm and maybe a bit fantastical that builds up suspense towards a huge terrifying, awe-inspiring reveal and Steven Spielberg is a master of that skill.

The Blues Brothers. It has action, comedy, cameos, and some of the best music in any film. I will never tire of watching it.

O Brother where art thou

The music, the pacing, the twists, the characters.

Huh? wait wait, let me, let me explain something to you. Uh, I am not Mr. Lebowski; you're Mr. Lebowski. I'm the Dude. So that's what you call me. You know, uh, that, or uh, his Dudeness, or uh Duder, or uh El Duderino, if, you know, you're not into the whole brevity thing

For me it's definitely Fight Club. No big spoilers below, see it if you haven't.

The theme of hitting bottom purposefully in order to rebuild yourself consciously into who you want to become has stuck with me.

I've been through some shit since then and have had to rebuild. It's nice to look on it as an opportunity rather than a punishment.

Hackers

Gattaca. The music is superb and the locations are awesomely brutalist. My favorite by a long shot.

I'm actually tempted to say Snatch too. City of God (Cidade de Deus 2002) is up there with it. Some time ago I probably would've said Donnie Darko, but I've grown out of it over the years.

I was having a hard time anyway, but after reading through all the comments, I don't think I could narrow it down.

If I had to try, it would be, in no particular order:

The Matrix

Princess Bride

Fight Club

Shawshank Redemption

The Boondock Saints

The Incredibles

...

Actually, I can't narrow it down....lol

Back to the future

Lost in translation

Blazing Saddles.

But Snatch and Lock Stock and Two Smoking Barrels are a really great pair of movies.

Futurama: Bender's Big Score may not be the deepest film, but it's never failed to make me smile. "I can wire anything to anything! I'm the professor!"

Alien (1979). The perfect organism movie.

I really like what we do in the shadows

Don't really have an absolute favourite, but one kinda obscure one that everyone should see is Tucker and Dale VS Evil

I honestly can't choose between Alien and The Shining. Honorable mentions to My Neighbor Totoro and Dumb and Dumber. Shit, now I have four movies to watch this weekend

There will be blood. I love character studies and Daniel Day Lewis does just an amazing job.

WALL-E, I rewatched it many times and played the video game. I loved the animation, the way it highlighted various topics.

I could watch The Emperor's New Groove all day, every day and never get tired.