This being the internet, I realize that it's normal to exaggerate constantly, but after long and careful reflection on my film-going experience, I can say without any guilt or doubt that Dragon Wars is the worst film I've ever experienced in a theater. I've seen plenty worse on DVD, but that's a different story: films on television have much less power, and one's expectations are modulated accordingly when one pops in a DVD. There's something quite awe-inspiring on seeing a film that absolutely Does Not Work on the big screen.
Dragon Wars cannot be enjoyed on any level, be it populist, intellectual, popcorn, ironic, kitsch, or immature. This is evident from the very first scene, which stuffs into five minutes the aftermath of a serpent attack, a flashback within a flashback involving a wise old antique dealer, 14th century wuxia, and the Korean version of Sauron's army; all without being the least bit enjoyable.
I could go into the plot but I think the most illustrative flaw in the film is the complete lack of dragons. There is precisely *one* dragon in it, for about 5 minutes. When I see a movie entitled Dragon Wars I expect the Battle of Britain, except with dragons. I want good dragons fighting bad dragons, and a third group of desperate humans fighting the dragons en masse. (Note that this scenario requires multiple dragons, and you're start to divine the source of my displeasure.) I think that's a reasonable expectation. Apparently there's a school of thought popular amongst novice and overly-patriotic Korean filmmakers that disagrees with me.
That is all I will say on the matter.