Seven Samurai is one of my favourite films. Such is the depth of the characters and the script that you'd think it were adapted from a novel.
I also like Stanley Kubrick. Of his I've seen Full Metal Jacket, The Shining, 2001 and Clockwork Orange. Full Metal Jacket is my favourite of his, and among my ”all time’ favourite films. The chapter in which they’re being lured in by the lone sniper is so engrossing . I nearly shat myself the first time I saw that sniper. Pretty spooky.
The Shining is also very good; it’s the only film that has given me the spooks in my adulthood. The first time I saw it, I had a nightmare about those two little girls. But yes, very good film; it looks absolutely stunning, and it also features some subtle symbolism (such as the Native American theme).
2001 is pretty good as well; Clockwork Orange is good to watch too; but the other two Kubricks are my favourite.