The Dark Knight
Saving Private Ryan
Se7en
The Departed
Fight Club
The Matrix
Shawshank Redemption
The Godfather
Inception
The Usual Suspects

Honorable mentions: Star Wars Episode IV: A New Hope, Star Wars Episode V: The Empire Strikes Back, the Lord of the Rings trilogy, Raiders of the Lost Ark, Toy Story, Heat, The Prestige, Pulp Fiction, Reservoir Dogs, Inglourious Basterds, Finding Nemo, Memento, Rear Window, Goodfellas, Gladiator, Blade Runner, No Country for Old Men, Back to the Future, American History X, District 9, Die Hard, In the Name of the Father, L.A. Confidential, Mystic River, The Good the Bad and the Ugly, The Green Mile, and Braveheart.

Ooooh a very important distinction, and a very tough call. This is going to be hard for me to come up with....

The Dark Knight
Scott Pilgrim vs. The World
Fight Club
The Empire Strikes Back
Jaws
Jurassic Park
Shaun of the Dead
Indiana Jones and the Last Crusade
Pan's Labyrinth
28 Days Later

I've done this a couple different times and my list always seems to change. But here goes nothing.

The Brothers Bloom
500 Days of Summer
The Dark Knight
The Social Network
Fight Club
The Godfather
The Shawshank Redemption
Saving Private Ryan
Gladiator
Toy Story 3

Here goes:

The Social Network
The Shawhank Redemption
Pulp Fiction
Saving Private Ryan
Raiders of the Lost Ark
The Dark Knight
Fight Club
Jurassic Park
There Will Be Blood
Fargo

So I see we all have Fight Club on our list...proud of you guys!