Eomer, I know what you mean and that was a pretty sturdy orc...I mean to get speared in the back and get up from that in not that bad of a shape is pretty amazing. The Grishnakh chase into the forest was cheesy Hollywood.
I do agree with
Essex and that these sequences work for me. I never minded Treebeard until he acted as if he had no clue of what was going on around him. (The burning of his forest comes to mind). But, I like this introductory to Treebeard and don't have a quarrel with it.
Also,
Essex, not only Aragorn regaining his hope in the "chase" for the Hobbits, but the despair all three of them come across when they first arrive and think they are dead. A well done scene by everyone.
And a bit on accents, supposedly Jackson tried to get Billy Boyd to change his accent, but all of Billy's lines came out rather bad. Then he found out in
The Hobbit the Took's invented golf, and Billy's Scottish accent worked fine.