We saw The Nativity last w/e and it was excellent - not Hollywood'sh at all. We saw it instead of the Danny DeVito or Mel Gibson movies and do not regret. One of my teens said she actually had tears at the birth of Christ - it was surely the most touching scene in the movie and NOT overdone....very simple but it grabbed your heart. Don't know how else to explain it.
I also had tears at the birth of the baby Jesus in The Nativity Story. It was a stunning, exhilarating moment.