What made this movie amazing

Rating: 8/10 (22 May 2009)

OK this movie, for the first 3/4 of it, drags along as a pretty standard "The giants bugs are attacking!" Burn them with fire!" story. The only really interesting non-clichéd thing in the 1st 75% is the crazy religious lady and how she manages to convert some of the people in the store into her little death cult.
So why did I give a movie 3/4 of which is average at best 10/10? Yes the ending is just THAT good. The protagonist feels superior to the crazy followers of Mrs. Carmody. He never thinks HE'D do anything insane when faced with a terrifying situation but of course in the end when he faces his moment of truth he does something so insane and monstrous that it is hard to even believe.
The real monsters in this movie are in the human psyche and the "hero" is certainly not immune from them. The ending shows so clearly the futility of believing that we are all purely sane and that we aren't capable we aren't capable of heinous insane actions with the right triggers.
Some viewers might have thought they'd THEY'D never do anything like that (and thus squarely missed the whole point of the film) but for the rest of us this movie present a jarring reminder to never say never...We are all just humans. that is our greatest blessing and our greatest curse.