All great suggestions. I'll add Excalibur and Cast Away.
I just love the british theater-like vocal stylings and, of course, the timeless story of King Arthur (love, betrayal, redemption).
I saw a version of castaway where one of the producers walks you through the scenes and it is fascinating. There are so many hidden messages in the movie its unreal. One thing struck me...they found this island and filmed the first half of the movie. They broke for six months (IIRC) and came back after Hanks changed his body to reflect someone in that position. But the insurance company wouldn't insure the movie because they were afraid a storm might wash the island away. Only after convincing the insurance company that this was minimal and paying a hefty premium did they move forward with the movie. So it took a year to film, in two parts, flabby Hanks and buff Hanks. BTW, Hanks got a serious infection. Also, they went back and filmed Hanks' rant to his buddy after he saw his ex-GF. The original had him seeing her and then driving off knowing he had let life move past him in his pursuit of being on time (Fed Ex). The next scene was him seeing the artist and returning the package. He finishes with saying "thank you" which is a message that the package and the ordeal, had saved his life (in terms of meaning). Anyway, in testing people didn't get it, so they had him come back and wrote in his summary speech before they released it. Just such a unique movie and so well done. They laugh that the script was 1/4 of an inch thick. It was all visualization by the writers, producers, director and Hanks.