Reign of Fire (2002)

An action fantasy directed by Rob Bowman, starring Christian Bale and Matthew McConaughey.
A boy visits his mother in the mine where she works when a drilling team hits a cavern. Dragons come out of the cavern and attack the city. Years later, the boy has grown up and is in charge of a fortress full of people, trying to survive in a land ruled by dragons. A group of dragon hunters show up and they work together to fight the dragons.
What we've got here is a mediocre film with really cool CG dragons. The plot and characters are relatively shallow and the style leaves much to be desired, but damn are those dragons cool. I'm instituting a new rule that should have been old by now. I call it the "CG monster rule" and it raises the rating by one increment when the CG monsters are worth watching. Hence, I rate this adequate via the "CG monster rule".