The alien in the living room is dramatic every time. The realization that the hand of fate is reaching in to work it's magic is highly satisfying every time. The score is excellent. The acting is on point.
If you lose yourself in a fuss over the religious matter surrounding Graham's character, well that's just your loss. In the context of this movie, it works masterfully.
It's no The Sixth Sense or Unbreakable, but Signs manages to be a reasonably effective suspense thriller, that manages to get past a poor script with too many conveniences.
I liked it, but I think It could have been much better