"Cute Rohan Refugee Children . . . . . . . . Billy Jackson and Katie Jackson" (Peter Jackson's son and daughter)
Two lines in Maori (wishing all the best to their land and people): He maungärongo ki te whenua He whakaaro pai ki ngä tängata katoa
The Extended Edition has the listing of the Lord Of The Rings Fan Club members, similar to Extended Edition of The Lord of the Rings: The Fellowship of the Ring (2001).
Special thanks to ... and to the thousands of others who helped make this film a reality.
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.
Just like the previous "Lord of the Rings" movie, there are no opening credits after the title has been shown.