One of the most pivotal scenes in the entire trilogy in both the books and the films. The Council of Elrond scene, which takes place in Rivendell sets the course for the rest of the story.
`I will take the Ring,’ he said,`though I do not know the way.’ ~ Frodo Baggins
In The Lord of the Rings: The Fellowship of the Rings Extended Edition we are treated to the part of the scene where Boromir reveals the One Ring is already tempting him and Gandalf steps in to recite the verse upon the Ring in the Black Speech of Mordor!
This scene in the books is chock full of exposition and Peter Jackson does a masterful job of bringing the most pertinent elements of dialogue and narrative together to tell the story and form the Fellowship of the Ring at its conclusion.
The scene below is not the full version, but is does feature the extended part, including the recitation of the Black Speech by Gandalf.