I had such a great time filming Misty Mountains Cold video from the movie The Hobbit soundtrack. We filmed it at "Rock City" in Tennessee where they have great caves that feel like you're in the Dwarven mines right out of the famous J.R.R. Tolkien books. Be sure to watch me fight the dragon Smaug at the end!
http://www.youtube.com/watch?v=m8Sj651-7pY
<Added>http://www.youtube.com/watch?v=m8Sj651-7pY