Beowulf (1999)

A fantasy directed by Graham Baker, starring Christopher Lambert.
A hero arrives at a castle besieged by a monster. He fights the monster and cuts off it's arm. Everyone celebrates until the monster comes back. The hero then kills the monster and it's mother.
This should have been called "Flipowulf vs. Pretendel". The hero does flip after flip, aided by some kung fu wire and the monster has this stupid video effect on it all the time. While this is happening, techno-rave music is playing ever so cheesily. That just about explains the film, so I'm rating it o.k.

Beowulf (2007)

A fantasy directed by Robert Zemeckis.
A hero comes to a land that is cursed by a monster. He slays the monster and placates it's mother by giving her a golden mead-horn. He is then made king. One day, the horn is returned and he knows that the mother will return with it.
This is how to do CG fantasy right. They start with a good, old story and make the monsters impressive. Then they add sea monsters and a dragon. It can't go wrong. I'm rating it good.