Okay, I have thought of another change that was well done. At the Prancing Pony, in the movie we are not aware that the hobbits have pulled the old room switcheroo. The shot of the Nazgūl creeping in and stabbing at the beds is quite a shock, then! Well done. I also particularly like the shot of the five Nazgūl at Weathertop surround the hobbits and, as one, levelling their swords at them. Chilling. Although the rest of that scene leaves something to be desired (was that a flame?)...