The Battle of Five Armies: Beorne

Other than Gandalf, Beorne has always been the most memorable character from the Hobbit for me. Yes, even more than Biblo. Sadly, as a child my understanding of the Hobbit was essentially that long ago, a wizard and a number of short people went looking for gold and got mixed up in some bad business with a dragon. 

Bilbo actually got lost in the dwarves for me until I reread the story later on in life. And while the host of characters in the story were vague from when I first read it long ago, the big hairy guy who got so angry that he turned into a giant bear and killed everyone was pretty unforgettable for me. It blew my childhood mind. Later on I would read it again, and by then having read some history and read about berserkers, I found that his character made more sense and became even more fascinating.

It was exciting for me that, in the darkest moment of the Battle of Five Armies, when it seemed that the goblins were sure to be victorious, Beorne shows up in a rage and destroys everything. But that he then rescues the body of Thorin and carries him back to safety before returning to destroy the goblin hosts is absolutely wonderful.
Tolkien said that he loved the moment in the battle when Biblo cries, "The Eagles! The Eagles are coming!" But for me, it has always been this moment, where Beorne crushes the goblins in a fury and rescues Thorin.