Smannesman: Actually, D&D itself is a terrible basis for a movie since it's basically just a generic fantasy setting in which to have adventures. In the IGN article however they mention the Forgotten Realms which is a campaign setting with a ton of lore, so that's at least a better basis for a movie.
You got it all backwards. D&D is an awesomely imaginative setting, with a unique, weird and wonderful society that we've never seen properly depicted in mainstream media. It's a setting where Libertarianism is literally true (unlike in the real world, hur hur), and it makes for amazing stories. Forgotten Realms is a bland and shitty patriarchal generic fantasy, by rabbits and for rabbits, to paraphrase Moorcock.