Actually, this is the best movie of the summer. It is a metaphor about apartheid (think District 6 in Cape Town) and humanity's inhumanity to others. It is also a cautionary tale about government supported bureaucracies (Haliburton, et cetera.)
Reviews:
"Certified Fresh" by Rotten Tomatoes
http://www.rottentomatoes.com/m/district_9/
3 *** by Roger Ebert
http://rogerebert.suntimes.com/apps/...IEWS/908129987
9 Stars at IMDB
http://www.imdb.com/title/tt1136608/
et cetera...
Most people who seem to be disappointed in this movie wanted a Transformers like movie, or went in expecting an action flick, while this is a drama.
Also, Men In Black was a B movie, and absolutely nothing at all like District 9. They both have aliens, that's about it.