I enjoyed watching it. It was a nice spin on the "ordinary people in extraordinary circumstances" plot device that is lacking in the film industry on the whole. Typically heroes are larger-than-life-spent-years-training-came-back-from-impossible-odds archetypes, which isn't necessarily BAD, it's just nice to get a breath of fresh air now and again.
/flameshieldup
That's one of the things I liked about NGE, it's a normal kid who (aside from all of the character traits being taken to extremes and emphasized quite heavily) is given a monumental task to undertake, where millions of lives are riding on the outcome. What happens? He freaks out of course (The new movie series seems to be approaching it in a more restrained and paced manner, which is very enjoyable indeed).
/lower shield
Same thing in Unbreakable. It's one thing to be good at your job, but when Willis' character realizes how broad the repercussions are to admitting to himself that he's extraordinary, his character would probably give anything to give that responsibility away and let it be someone else's problem. Until of course he realizes that he actually can't nor does he want to be anything other than extraordinary.
TL

R - Good movie.