[arethuza]

I'm struggling to think of any movies that are really historically accurate - the point is to tell a good story to get people to watch it to make a profit.

Edit: I'm Scottish so Braveheart is the obvious example - entertaining movie but wildly inaccurate and even manages to get who/what the term "braveheart" refers to wrong.

[endgame]

Master and Commander (the Russell Crowe film)? While it's a fictional story, I've heard it said that it captures the period extremely well.

[HideousKojima]

Gettysburg and its prequel (Gods and Generals). The dialogue and character motivations may or may not be accurate, but the battles it depicts are pretty accurate.