In no order here are some of mine:
The Fountain. Poetry on the screen. Simple as that.
Gregory's Girl. Perfect evocation of growing up and falling in love without being a cliched ridden piece of schmaltz.
Halloween (original). The first Horror film I ever saw and still one of the most efficient pieces of film making ever.
The Elephant Man. Some of the best acting in a film I have ever seen. Both hauntingly beautiful, saddening and supremely optomistic at the same time.
Shadowlands. A measured study in quite restraint from Anthony Hopkins. Heartbreaking.
Withnail & I. The greatest film ever about drinking and the most quotable film ever.
The Long Good Friday. The best British gangster film by far. Tough as nails with a mesmeric performance by Bob Hoskins.
Taxi Driver. Alienation and depression has never been done better before and since. simply stunning.
Bob Le Flambeur. The coolest film ever made and 5 years before that other icon of cool French cinema A Bout De Souffle.
The Godfather I & II. The greatest dramas ever put on film. You try and split them apart.
The Matrix. Mercilessly ripped off since this is still of the finest action movies ever made.
Solaris (remake). Hypnotic and underplayed superbly by all concerned. Cerebral without losing sight of the human aspect of the story.
The Terminator. You are 12 and you see this machine mercilleslly track it's victim amidst a neon Los Angeles. It still absolutely kicks arse.
2001:A Space Odyssey. The greatest sc-fi film ever made with the best ever jump cut. In one shot Kubrick did more than most directors do in a lifetime.
An American Werewolf In London. An American captures EXACTLY the Brit sense of humour replete with astonishing F/X, jet black humour and jenny agutter
George A Romero's 'Of The Dead' series. Unbelievably intelligent yet gory horror films full of classic set pieces.
I didn't realise how many films I love! I have barely scratched world cinema and classic Hollywood stuff!