I just got this on DVD recently, never took the time to see it before, save for a few clips online. Very strange mixture of monster movie and some political commentary, and the comedic bent was a little strange, too. Overall, I did like it, but I missed a few scenes and need to see it again, (was nodding off, I really only watch movies late at night after I'm done with everything).... The ending was a sad and shocking surprise that went against conventions, and the central family characters were pretty damn endearing, for all their quirkiness (and a bit annoying at times, but what family isn't?).
Also, extra cool points for casting Scott Wilson (Hershel from The Walking Dead) and Doona Bae from Cloud Atlas (credited as Bae Doona here).





