Wow, thanks that clears up a lot of things about U-571. I consider myself a history buff, but my brother's the military expert, he'd probably know half the stuff you're talking about. Now, back on topic, as previously mentioned, there's definitely a line bordering the two extremes of inaccuracies. Just missing something and intentionally doing something wrong are completely different. What matters is intent. However, I believe the Matrix thing to be completely idiotic. I love the movie, don't get me wrong, but that is a major plot hole in the foundation of the story. Granted, the movie is science fiction and fantasy and all, but it's based on a possible reality, or what it claims to be a possible reality. The first time I saw the movie I chuckled when he mentioned the human electricity supply system. Might've irritated a few people, but that's just too much for me.