Prometheus (HK theatrical release 2012-6-6) is remarkably consistent with Alien (1979).  With four Alien movies and the Alien vs Predator spinoffs in the past, I think Prometheus succeeds in offering new ideas about aliens and their origin.  In addition, it expands the Alien universe in a new direction but also pays homage to classic Alien scenes.  There are only a few horrific (but powerful) moments, since the movie is focused on telling the story instead of sticking to the formula of aliens killing crew members one by one.  I like this movie and would love to watch its sequel.