Irréversible
Events over the course of one traumatic night in Paris unfold in reverse-chronological order as the beautiful Alex (Monica Bellucci) is brutally raped and beaten by a stranger in the underpass. Her boyfriend and ex-lover take matters into their own hands by hiring two criminals to help them find the rapist so that they can exact revenge. A simultaneously beautiful and terrible examination of the destructive nature of cause and effect, and how time destroys everything.
City of God
Cidade de Deus (City of God) is a housing project built in the 1960's that--in the early 80's--became one of the most dangerous places in Rio de Janeiro. The tale tells the stories of many characters whose lives sometimes intersect. However, all is seen through the eyes of a singular narrator: Busca-Pé, a poor black youth too frail and scared to become an outlaw but also to smart to be content with underpaid, menial jobs. He grows up in a very violent environment. The odds are all against him. But Busca-Pé soon discovers that he can see reality differently than others. His redemption is that he's been given an artist's point of view as a keen-eyed photographer. As Busca-Pé is not the real protagonist of the film--only the narrator--he is not the one who makes the decisions that will determine the sequence of events. Nevertheless, not only his life is attached to what happens in the story, but it is also through Busca-Pé's perspective of life that one can understand the complicated layers and humanity of a world, apparently condemned to endless violence.
Kids
Disturbing, dark, low-budget independent film about teen-agers growing up in poverty in New York City. The story focuses on Telly (Leo Fitzpatrick), a teen who has a goal to de-flower as many virgins as he can. When one of his old encounters discovers that she is H.I.V.-positive, after only one encounter with a guy, Telly remains undaunted.
Those are my submissions, I was going to mention a few others but they've already been said. Hell, I just watched Clerks and Lock Stock and Two Smoking Barrels last night.