I'm not surprised that era think District 9 is one of the greatest sci fi films ever made, and one of the only sci fi films that has an underlying theme acting as social commentary.
I'm surprised they watched it at all when it isn't based on a comic book or TV show.
e: I like District 9, but its in the same bracket as Equilibrium, in that its a fairly traditional action movie riffing off a previous work (district 9 is to Alien Nation, as Equilibrium is to Truffauts Fahrenheit 451)