District 9 is one of those rarities - a science fiction movie which has a good plot.
Set in Johannesburg, it's a story about a population of aliens who've ended up as refugees in this unfair city. If you know anything about South Africa's torrid history, then the apartheid theme will hit you in the face. It also reminded me of the news stories on tv that I've seen, about refugee camps and the treatment of the people who live there because there really is nowhere else for them to go.
But it's not all depressing. The man who's got the job of organising the removal of the alien population to somewhere 200 miles away, is quite a comical figure. He ends up being the hero (or anti-hero, perhaps).
I wonder if the timing of the remake of V was coincidental?