The way the last dragon gets killed, kinda reminds me of how the last truck in Maximum Overdrive ..uh.. "dies". To kill the dragon they shoot an arrow with a high explosive tip(you know, like Rambo used) into the beasts mouth, causing it to explode in a fiery mess. In Maximum Overdrive they fire a rocket/RPG and hit the last truck head on(the truck wich had the psychodelic face of The Green Goblin on the front... Creepy!). The rocket goes straight into the truck-face`s mouth and naturally turns the truck into a fireball of twisted metal.