Hmmm, I'll try to limit this to absolute classics (in my mind) - though most have them have been mentioned I'll just reiterate.
Let the Right One In - a modern day vampire movie done like nothing you've seen before
Seven Samuri - Pretty much a necessity for anyone that seriously wants to enjoy film. You almost have to watch that movie three or four times just focusing on one element at a time - sound, cinematography, costumes, etc.
Spirited Away - I know you've probably seen this already but if you haven't, you know, duh. Best animated movie of all time easily. Most would agree. And you don't have to like anime, I certainly don't. The dubbed version is solid if you want to watch that.
Slightly lower tier that hasn't been mention yet:
Infernal Affairs - The original The Departed from Hong Kong. Think Jack Nicholson played his role well? He can't hold a candle to the Hong Kongian actor. Sorry, I can't be bothered to figure out his name exactly right now.
AND AUDITION BECAUSE THAT'S NOT A CUT 'EM UP GORE FEST!!!!?!?!?!?
oh wait. it totally is.
Let the Right One In - a modern day vampire movie done like nothing you've seen before
Seven Samuri - Pretty much a necessity for anyone that seriously wants to enjoy film. You almost have to watch that movie three or four times just focusing on one element at a time - sound, cinematography, costumes, etc.
Spirited Away - I know you've probably seen this already but if you haven't, you know, duh. Best animated movie of all time easily. Most would agree. And you don't have to like anime, I certainly don't. The dubbed version is solid if you want to watch that.
Slightly lower tier that hasn't been mention yet:
Infernal Affairs - The original The Departed from Hong Kong. Think Jack Nicholson played his role well? He can't hold a candle to the Hong Kongian actor. Sorry, I can't be bothered to figure out his name exactly right now.
AND AUDITION BECAUSE THAT'S NOT A CUT 'EM UP GORE FEST!!!!?!?!?!?
oh wait. it totally is.