The Lord of the Rings is also the title of the poem which introduces each book in the trilogy set. One of the first poems I ever committed to memory, it is to poetry almost what the trilogy is to fiction, IMHO.
Three Rings for the Elven-kings under the sky,
Seven for the Dwarf-lords in their halls of stone,
Nine for mortal men doomed to die,
One for the Dark Lord on his dark throne
In the Land of Mordor where the Shadows lie.
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the Land of Mordor where the Shadows lie.
-- J.R.R. Tolkien