I liked it (spoilers)

I also liked it. I think the people who didn't like it, didn't understand the movie (I got it straight away). The whole thing was a metaphor for how the media/television controls us and controls how we think. The televisions in the movie even have they're own heartbeat, like a life of their own. The dad is a definite sheep/follower (remember how he used that same analogy when roping in his daughter's boyfriend - something like 'we need to lead the herd') - so the dad blindly and without question, does everything the tv tells him to, even if it tells him to torture his 'sleeper agent' son (I know, right!). The son who came home unexpectedly is definitely not a sheep or a follower and has a mind of his own, hence the reason he is estranged from the family (the sister yelling out 'you think you're always right!' is a clue to this). The racism portrayed in the movie can also be seen as a consequence of the media putting fear and hatred of Islamic figures in our minds, due to the high number of 'terrorism' acts of late (speculation of such even came on the tv, where the crotchety granddad agreed with the news report, fact or no fact). As a result, the family openly show their racism towards the Asian girlfriend of the son who came home. Anyway, to cut a long story short, by the end of the movie we see the dad, who was always a sheep/follower, now completely taken over by the tv (like a puppet), everyone dead but the newborn baby is now a follower/worshiper of the tv (the tv kept saying 'worship me, worship me'). The tv will now be the newborn's everything - mom, dad, sibling, babysitter and therefore, as is always the case, will be raising this newborn.

I liked it, but the ending was kind of a cop out.