An Idea: "Gondorian Idiot" (American Idiot by Greenday)
And in the film when Sam reaches the scarecrow and says "if I take one more step it'll be the furthest away from 'ome I've ever been (or something along those lines) try "Oh my God" by the Kaiser Chiefs
(for those who dont know the song
the chorous is "oh my god I can't believe it, I've never been this far away from home..........")
