Well they did end watching transformers after 15 minutes, and it was the comparably worse than dnd movie, so don't generalise what my friends think... Although anything is better than transformers. I myself haven't seen the first D&D movie, I've seen the 2nd and the 3rd. I liked them.
I have to say that they contained stuff that only D&D fans know about. To an average joe, they don't open up that much.
ie. in book of vile darkness, the main character purchased a bag of holding, a ring of the ram and some other stuff. Those magical items were never explained what they were, but I am pretty sure that nearly everyone here knows.