Primer

What is undoubtedly this years Memento, Primer is a structural mindbender of the highest order (think La Jetee scripted by Robert Altman and shot by Steven Soderbergh). It is a 'hard' science fiction film without any special effects and set in the present. It is dialogue, dialogue, dialogue over gritty and disorienting camerawork. It was likely made very little money. But this is in service of the experience.
The audience is like a voyeur over the lives of several engineers who invent something which could change the world, but fear, paranoia and greed supercede any chance of trust. These young entrepreneurs wear their pressed white shirts and $20 ties not just to their day jobs, but even while they work on thier side-projects in one of the guys garage. The bicker, they fight, and they are petty little boys.
I will go no further than this in discussing the film it's best to go in cold. You will either be fully engaged at untangling the narrative or possible lost in its labyrinthine structure and procedorial minutae. If causality, paradox and nested reality pique your interest or you just like a good puzzle, this is not to be missed. A post screening discussion is demanded. I believe that I have pieced all the stuff together, but a second viewing is required to test my theory. Primer is not just a puzzle however. There is a lot of 21st century post-tech boom subtext from the characters behavior and it has a lot to say about the way things are done in high-tech (nay the entire business world) sector since the 1990s of instant-riches-today, burnout-crash tomorrow.
STRONG CAUTION: if you wish to experience this movie to its full effect, read no reviews, previews or watch no promos, trailers or other material. Being swept away in the films microcosm is the joy of the whole affair. Sure to be a DVD classic.