The Lord of the Rings remains one of the greatest movie trilogies of all time, and that's in no small part thanks to its phenomenal cast. Sean Bean, who plays the iconic character Boromir in Fellowship of the Ring, nearly got the role of Aragorn before eventually being cast as the character he would be so well-known for. This interesting piece of trivia makes the production of the Lord of the Rings trilogy even more interesting. Stuart Towsend was initially cast in the role, before ultimately being replaced by Mortensen shortly before the filming began. Overall, it's hard to argue with how things turned out, as The Lord of the Rings would go on to become incredibly successful both critically and financially.