What Film(s) Would You Call A Masterpiece?

[Gnizmo]

Soriku said:
Titanic

 Well I'm glad you finally feel comfortable enough to come out of the closet like this.

 Casablanca, Serenity, Unbreakable, Eternal Sunshine of The Spotless Mind, South Park: Bigger, Longer, and Uncut, The Man Who Shot Liberty Valence, and Secret Window off the top of my head.