Lord of the rings.

The Fifth Element.

Monty Python and the Holy Grail

LOTR

Shaun of the Dead

Dodgeball

Pirates of the Caribbean

So many good answers here, but I gotta add Aliens and Ferris Bueller's Day Off

Kung Fu Hustle

Evil Dead 2

The Breakfast Club

Hackers. It’s so bad but I love it

Back to the Future.

Superbad

Heat, Groundhog Day, Alien, Blade Runner

Starship Troopers. It doesn't matter what mood I was in, I will be in a better one by the time it finishes. Also makes for excellent background for household chores, once you have the whole film basically memorized.

How the hell have neither Mean Girls or The Princess Bride been posted yet?? Those are, like, the most quotable and fun movies ever.

The Matrix and Die Hard and The Dark Knight Trilogy.

The Other Guys

The Grand Budapest Hotel (peak Wes Anderson)

Empire Records.

Damn the man! Save the empire!

Clue

The Big Lebowski

21 Jump Street

Spaceballs

There's many but the classic action ones, for me, are The Rock, Con Air, Patriot Games, The Sum of All Fears, Air Force One, Starship Troopers, Pacific Rim, and Die Hard/er.

On the lighter side, I'll always watch Forgetting Sarah Marshall, Superbad, Anchorman, This is the End, Hot Tub Time Machine, Pirates of the Caribbean, Blazing Saddles, Robin Hood: Men in Tights, and The Emperor's New Groove.

Supertroopers and Hot Fuzz

Eternal Sunshine Of The Spotless Mind. The premise always sucks me in, can't turn it down. Not a good movie to watch on a date or in the beginning of a relationship though.

Holes (Disney)

Blues Brothers. Orange whip? Orange whip? Three orange whips.

rocky horror

Pulp Fiction

The Back to the Future trilogy. It'd only be a slight exaggeration to say I've watched those movies hundreds of times.

True Stories

A small but growing Texas town, filled with strange and musical characters, celebrates its sesquicentennial and converge on a local parade and talent show.

David Byrne of Talking Heads fame visits a typical (and fictional) Texas town, on the eve of the town's celebration of the state's sesquicentennial. He meets various colorful local characters, most notably Lewis Fyne, a big-hearted bachelor in search of matrimony.

• The Godfather part I
• The Revenant
• Heat
• Forest Gump

Remember the Titans. I don't care if it's 5 minutes in or 5 minutes from the end, I will sit and watch it.

"You make sure they remember, forever, the night they played the Titans!"

The Fugitive.

Naked Gun 1/2/3

Executive Decision.

High Fidelity

Snatch

Anchorman

Robocop, Trains, Planes and Automobiles, Dances with Wolves.

Gladiator or Master and Commander

The Shawshank Redemption

Jay and Silent Bob Strike Back

Step Brothers

Billy Madison

Dumb and Dumber

Airplane!

Before Sunrise