Echoing what others have said, I don't comment. Ever. But I felt I had to comment on this since some review sites were giving such negative reviews.
First off, I don't think its a comedy. Its definitely had funny moments, but its more of a satirical take on the current state of the world (specifically the US).
The comedy sprinkled through out is a welcome relief from its ominous (and eerily accurate) depictions of the world definitely give a feeling of "If I don't laugh, i'll cry".
Its absolutely worth a watch.