It was clear to the writers from the beginning that the entire final sequence of the individual novel (Frodo and Sam's encounter with Shelob) would be part of the third movie, not this one. Also, the confrontation with a defeated Saruman at Isengard was deemed to be too anti-climactic, and was therefore moved to the third movie, as well. This tactical move meant the battle for Helm's Deep became this movie's natural climax.
Gandalf:
There is no way out of that ravine, Théoden is walking into a trap.
In the beginning of the movie, when Frodo and Sam are walking on the rocky mountain their rubber artificial feet can be clearly seen flapping around.
One section of credits is for the "Hammerhands" (presumably for carpenters). This is a reference to the name of the "historical" founder of Helm's Deep, Helm Hammerhand. Also, apprentice builders are known as "hammerhands" in New Zealand.
The scene where Faramir interrogates Gollum is slightly different between the two versions. In the theatrical version, he enters the room only after his men have beaten Gollum. In the extended edition, he is in the room during the abuse, but stands apart, not actually taking part in it himself, before telling them to stop.
English, Sindarin, Old English
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