[maikafanawen]

My two favorites are:

We come, we come with roll of drum: ta-runda runda runda run!
We come, we come with horn and drum; ta-runa runa runa rom!
To Isengard! Though Isengard be ringed and barred with doors of stone;
Though Isengard be strong and hard, as cold as stone and bare as bone,
We go, we go, we go to war, to hew the stone and break the door;
For bole and bough are burning now, the furnace roars — we go to war!
To land of gloom with tramp of doom, with rool of drum, we come, we come;
To Isengard with doom we come!
With doom we come, with doom we come!

mentioned already by Diamond and Salix, and

"Out of doubt, out of dark to the day's rising
I came singing in the sun, sword unsheathing.
To hope's end I rode, and to heart's breaking;
Now for wrath, now for ruin and a red nightfall!"

mentioned by Nerindel. There's probably a billion more in the Silmarilion--I've got to read that!!!

-Maikafanawen