Best song recorded by a band but never preformed live

Are you kidding about "The Odyssey?" Symphony X played that as their encore for every single show when they toured for that album. In fact, I believe it was their encore for the entire first leg of the Paradise Lost tour as well.

Oops. I couldn't remember if it was "The Odyssey" or "The Divine Wings of Tragedy" that I've seen. I guess it's the former.