We've already seen how not to market one, but according to reviews so far, the filmmakers of Outlander could've used some help in creating it too.
The AMC blog (which I don't always agree with) says, "Tragically, the filmmakers had no idea what it is about the idea that set nerdy hearts aflutter. And so they deliver a bush-league, cable television-quality sword-and-dragon actioner -- one that's as goofy as you could imagine, but without the smarts to make the silliness endearing or cool."
Roger Ebert (whom I also don't always agree with, but blindly trust to be thoughtful about his opinions) also says that Outlander is mostly a medieval knight vs. dragon story transplanted into a Viking setting with some scifi decoration that you're not supposed to think too hard about. I don't expect to dislike the movie just because Ebert and AMC did, but they've succeeded in dramatically lowering my expectations for it.
And now for a cool giant monster (and some even cooler giant robots)
Not sure who it's by, but I found it here.
By Otis Frampton.
By Eric Chiang.