Bilbo Baggins: One day I'll remember. Remember everything that happened: the good, the bad, those who survived... And those that did not.
During the battle, when Legolas throws Thorin's sword into the troll above Thorin, he pulls the sword out and it is stained with blood. But in a later shot, the sword cleans itself.
Fans may be unaware that Billy Boyd, who played Pippin in the Lord of the Rings movies, sings the end-credit song, "The Last Goodbye."