District 9 is "presented by" Peter Jackson, which is one recommendation, and is getting the sort of buzz associated with much more high-profile and bigger-budget sci-fi movies than a story of aliens landing in South Africa and the prejudice they encounter, which is another. And here's a promising teaser trailer.
See? Interesting stuff. The film's plot details are still under more wraps than a pashmina factory, but we do know that the aliens are exploited as a workforce by a fictional company called Multi National United, and forced to live in slum-like conditions - and that never ends well on film.