From the Rankin Bass Return of the King cartoon:
This is true to the books, IMO. This is one of the very few changes in Jackson’s movies that bother me enough to write about. I like the movies, but the scene with Gandalf and the Lord of the Nazgul feels like revisionist history to me. I’ll have a Tolkien post here later today and another at Part Time Monster. I’ll also have one at The Writing Catalog to show anyone who is interested how I planned my Tolkien series.