My biggest issues were the total butchering of the timeline Jackson made to move make the Battle of Helm's deep happen. The whole trek from Meduseld, the warg attack, Aragorn's near-death, and the march of Saruman's orcs all happened in the same day and night, I can even ignore the barrenness of the Pellenor Fields (those should all be farmland!) and even dropping the Scouring Of The Shire. Other than those flaws, I thought the movies were pretty good.