The Lion, the Witch and the Wardrobe. Best film I've seen in a long time. the story is just superb and its on such a grander scale than the original BBC series. I can't read the book, can't read much at all.
Of the classics it´s "A Touch of Evil" by Orson Wells.
I think film that made the biggest impact was when I saw Acapolypse Now for the first time as a rerun on the biggest screen in Oslo. I remember everyone (1000 odd people) completly quiet as we left the cinema. Magic
Oh, and The Usual Suspects is another great one. Hard to list a favourite though