A sequel or prequel of the game would make a good movie. Advent Children was totally awesome (and for only $10, what a bargain). It also depends on how they made it. Since FFX is largely story based they would have to make the movie like that to make it as much like the game as possible. As long as they don't ruin it by trying to squeeze as much story into a short movie or cutting the story down too much in order to fit into the movie. It would be quite a challenge and it would be interesting to see the result. xD