Here are some of mine (in no particular order)
Casablanca. Perfect. Thrills, inspires, touches me with every viewing. La Marseillaise scene brings me to tears every time.
Sunset Blvd. Bizarre and spellbinding.
Lawrence of Arabia. Saw this for the first time at one of the grand old movie houses last autumn. I had refused to see this epic starring one of my all-time favorites (Peter O'Toole) until I had a chance to properly view it on the big screen. It was worth the wait.
The Grapes of Wrath. Jane Darwell, playing Ma, and Henry Fonda, playing Tom, are amazing.
The Lion in Winter. An enormous guilty pleasure with one of the wittiest scripts ever. The sparring between Katharine Hepburn, Peter O'Toole and Anthony Hopkins is delicious. Great theatre and great cinema.
A Man for All Seasons. My favorite Christian themed film of all time. Crackling script. Just saw it again yesterday with a group of seminarian friends. Paul Scofield's perfect embodiment of St. Thomas More gives new meaning to reluctant but heroic martyrdom.
The Lord of the Rings. Peter Jackson is able to preserve and transmit far more of Tolkien's masterpiece than I imagined possible. One of my greatest cinema-going experiences ever.
It's a Wonderful Life. I cannot hold back tears when I see Jimmy Stewart break down in near-despair and clutch his children---neither can I at the end.
To Kill a Mockingbird. Gregory Peck. Enough said. I weep at this one too.
A Room with a View. I smile when thinking of this film. Comedy and romance with real intelligence, wit and charm. Lovely cast too: Helena Bonham-Carter, Maggie Smith, Judi Dench, Denholm Elliott, Daniel Day-Lewis, Simon Cowell. (Runners up in the stately adaptation of British novel category: Sense and Sensibility, Pride and Prejudice--both versions, Howards End)
The Passion of the Christ. Brings me uncomfortably but necessarily close to the reality of my (our) redemption by our Lord Jesus Christ just when I start taking it for granted. Annual Lenten viewing! I fall to pieces during the scenes between Jesus and the Blessed Mother.
Le Passion de Jeanne d'Arc. Another magnificent depiction of the Passion. This had an effect on me similar to that of Gibson's film. Brutally frank in its depiction. Maria Falconetti's devastating performance as Joan of Arc seems divinely inspired. Her haunting eyes have been seared into me permanently.
The Philadelphia Story. Cary Grant, Hepburn, James Stewart. Why can't they make romantic comedies like this anymore?
Bringing Up Baby. As a huge Grant and Hepburn fan, I can't get enough of this one either.
All About Eve. One of those films that will never be dated. I can't think of a film with more razor sharp and memorable lines.
many of Hitchcock's films. He made more great movies than any other director. It seems impossible to rank his best. Among them are: Strangers on a Train, Notorious, Rear Window, Vertigo, North by Northwest, Rebecca, Psycho. Some unsung gems: Rope, Lifeboat, Spellbound, Shadow of a Doubt, Suspicion, The 39 Steps, The Lady Vanishes.
Indiana Jones trilogy These movies are ridiculously entertaining. Even Temple of Doom, easily the weakest of the three, has some amazing scenes. My favorite is Last Crusade, chiefly because of Sean Connery and Harrison Ford's chemistry and the Christian theme. Raiders is right behind and would probably be my favorite if I were born earlier and saw it first.
original Star Wars trilogy, chiefly Episode V: The Empire Strikes Back . The first and third are wonderfully entertaining, but it is the middle chapter that has the most heft, wit and originality. It even has a couple great lines, not something you'd expect in a Star Wars film! Leia: "I love you." Han: "I know."
Beauty and the Beast (Disney version): Great songs, great animation, one of the few really interesting villains. I don't think Disney has equalled this one.