I'm not sure you can properly have spoilers for this movie. Because that would imply that it could be spoiled.
Of course, I didn't walk into it with high hopes, no 15-year-old boy is going to write the world's greatest novel. They're just too caught up in themselves and their moments and desires and perspective. And, clearly, the third volume of "Lord of the Rings."
Plot: Joyfully formulaic. Though I'm surprised they rescued the princess as early as they did, the mentor-figure, predictably, bit it. Act 1, scene 1, the poutagonist's brother wanders away, presumably to resurface in...dunno...book 3? I tried to read the first one, but ended up catching up on LJ, it's a little less self-involved and whiney. I had expected at least one kiss, though.
"Magic...comes from dragons. And you must learn the ancient tongue before you use it."
"Though I can see you can skip that stage. Oh, I see, you're playing a sorcerer, not a wizard. Gotcha. I don't know what I was thinking. You know, though, if you're split-classing as a Ranger you'll never advance. Wait, are you played by the GM's girlfriend? That would certainly explain it."
Why did EVERYONE have to finish each other's sentences? Oi! I guess they did it to break up the monotony a bit, and it couldn't have been too difficult to guess what the other person was going to say. Even if you weren't a telepathic dragon, reading Eragon's mind must be like reading an open brick.
I did enjoy the ending--the endboss monster was really neat-looking, and the final fight was well exceuted, and I think, overall, this movie is pretty strongly "good-bad." It was a lot of fun and had a high production value, but it should have been targeted at kids, not so much at an older audience. It would have been an excellent cartoon, like Whines kept telling me.