I've also had The Fellowship of the Rings DVD playing in the background, thanks to Mike Jasper's inspiration. I've mostly tuned it out, concentrating on the text, but every once in a while, I'll raise my head and catch a glimpse of Merry and Pippin setting off the dragon fireworks, or Frodo hiding under the roots of a tree from the Ringwraith, or Arwen racing toward the river -- and even with my head down, the music seeps through, the sound of Frodo's voice. I don't know why, but it works -- it actually helps me concentrate on the theory, and makes me want to write fiction, and cheers me up, all at once. I adore Frodo too.
Finished with Spivak. Now note-taking. Much note-taking. But possibly a yogurt first.