Dramatic twists in store in `District 9'

The mysterious and alarming signs have been out there for weeks, months even: On billboards, benches and bus stops featuring crude cartoon alien drawings, they’ve warned us of non-humans, they’ve urged us to remain separate.

“What is all that about?” you’ve probably wondered. Well, they’re ads for the enormously buzzed-about “District 9,” and thankfully, given their ubiquity, all the hype is justified.