At the same time it has a cast of genuinely likable heroes and genuinely dislikable villains and couple of folks that one's not entirely sure how to feel about, but what the hey? It's all in good fun. The plot revolves around classic themes, like family and responsibility and growing up. But they're classics for a reason, and for all the eye-searing effects and silliness, they get handled just the way classics should.
I give this movie two thumbs up -- though don't walk in expecting anything epic. Just let if flow and have a good time and you'll get what you came for.