Looks like there's more to District 9. The "post" campaign seems to have made it even more popular. io9 has more about some really cool things we didn't know about it. For example:

One actor plays all of the talking aliens.

It's only one actor who plays every alien, it's Jason Cope. He plays every single alien.

Its way interesting so hit the link to io9 to check it out.

 5 Things You Didn't Know About District 9 [io9]