The Last Goodbye in The Hobbit, the end of The Fellowship of the Ring, Sam's speech at the end of The Two Towers ("There is some good in this world Mr. Frodo and it's worth fighting for"), The Ride of the Rohirrim, the entire end to The Return of the King:
Fordo and Sam climbing up Mt. Doom ("I can't carry it for you but I can carry you")
" I'm glad to be with you Samwise Gamgee, here at the end of all things."
The fellowship reunited
Aragorn's coronation ("My friends, you bow to no one")
These are definitely some of the best scenes in the history of movie making!