There's a lot to be said for how music can enhance a tabletop gaming experience. Even if you like to keep things relatively music-free, sometime a good theme song for a villain playing quietly in the background can add some tension to a game that makes its introduction worthwhile. Over on EN World, I've made a point of collecting links to other threads where they discuss music use during tabletop roleplaying games which you can find here. There's also a recent Forbes.com article on Supervillain Songs that should prove fun to check out. Enjoy!