Empire Strikes Back
E.T.
Back To The Future
Raiders Of The Lost Ark
Batman Returns

Yours?

Back To The Future
Ninja Turtles (the first one and yes I am serious)
The Hunt For Red October
The Empire Strikes Back
Batman (the first movie)

King Arthur (laugh if you want)
Tombstone
A History of Violence
Godfather
XMen 2

Empire Strikes Back
Jaws
Raiders of the Lost Ark
Saving Private Ryan
Rear Window
Jurassic Park
Star Wars


Those are what comes to mind now, though I could probably do a top five for every genre.

LOTR
Fight Club
Band of Brothers ( I consider it one long movie)
Star Wars
Office Space

In no particular order:
Return of the Dragon
Once Upon a Time in America
Excalibur
Blade Runner
Beat Street
Empire Strikes Back
Return of the Jedi
Sleepers
The Last Dragon
Frailty
Event Horizon
Indiana Jones and the Temple of Doom
Buckaroo Bonzai: Across the 8th Dimension
Friday the 13th Part 2
Chinese Connection
Trainspotting
LOTR (both PJ and Bakshi versions, allthough the Bakshi version needed a sequel)
Conan the Barbarian

I don't think I could really rank them, and I'm sure I'm forgetting a few.

Outside of all the Star Wars films...

in no particular order...

Terminator 2
Monsters, Inc.
Office Space
Gladiator
Batman Returns
Bladerunner
Harry Potter and the Goblet of Fire
X-Men
The Matrix
The Big Lebowski
Goldeneye

Tough question, there are so many, and very different kind of movies. To make it easier I removed Citizen Kane, Fellini's stuff, etc. from the list.

in no particular order:

Blade Runner
Metropolis (1927)
Star Wars OT & Phantom Menace
Raiders & Temple of Doom
THX 1138
The Third Man
Batman Returns
The Shadow (1994)
Mortal Kombat (I don't know why, but I always have so much fun watching it)
Howard the Duck
Pulp Fiction
Angel Heart
Raging Bull
The Last Temptation of Christ
Orlando
Monty Python and the Holy Grail
L'Ours (1988)
Once Upon a Time in America
Once Upon a Time The West
Pirates (1986)
Cul-de-sac
The Tragedy of Macbeth (1971)
The Conversation
Picnic at Hanging Rock
Memento
Matrix & Reloaded
Mary Poppins
The Tenant
Ghost in the Shell
Avalon (2001)
Nausicaä
Fight Club
City Lights
Casablanca
Barry Lyndon

...+ some movies from my country none of you probably heard of, and also some films I'm too embarassed too mention

Empire Strikes Back
X2
Spider-Man 2
Batman Begins
LOTR
The Incredibles

1) A New Hope
2) Labyrinth
3) Raiders of the Lost Ark
4) Pan's Labyrinth
5) The Dark Crystal

Those are the ones I can watch over and over again and feel something new and exciting each time. Somewhere lower on the list I would include:

The other Star Wars films
Back to the Future 1 and 2
Jurassic Park
Terminator 2
Die Hard 1 and 3
Godfather 1 and 2
Pirates of the Carribbean 1 and 2
Just about anything by Stanley Kubrick, David Lean, Clint Eastwood, Tarantino, Coppola or Spielberg.

I like that quite a few people here have Batman Returns among their favorites. I think it's a generally underappreciated movie, the closest in atmosphere and style to, at least my own, experiences with Batman comics. Also it probably had a major influence on the stylized approach taken with Batman TAS that worked so successfully.

I totally agree. Batman Returns is a masterpiece and underappreciated IMO. It definitely comes closest in style to Batman: TAS which I absolutely loved. Danny DeVito's Penguin and Michelle Pfeifer's Catwoman can't be topped...plus Christopher Walken is awesome as well. Damn I think I'm going to watch that movie now...

The Burton/Keaton Batman films are really the only ones I like, Returns being the better of the two.

in some order:
Rushmore
Boogie Nights
Almost Famous
Vanilla Sky
The Talented Mr. Ripley
The Empire Strikes Back
The Royal Tenenbaums
Annie Hall
Crimes and Misdemeanors
The Prestige
Fight Club
Chinatown
L.A. Confidential
AMERICAN PSYCHO
Children of Men
The Purple Rose of Cairo
Capote

The top 5 I'm pretty sure of after that it's a toss up.

Star Wars
Jaws
Alien
Raiders Of the Lost Ark
Matrix II (Reloaded)
The Shining
Forrest Gump
The Fugitive
Star Wars: Episode III - Revenge of the Sith
Saving Private Ryan
JFK
Spiderman II
Good Fellows
The Deep
2001: A Space Odyssey
Die Hard


Honorable Mentions: King Kong (2005), Apocalypto, The Bourne Identity