There are many, but I saw a Fiyero understudy (I can't remember his name... Nicholas maybe?) the first night I saw the show in Atlanta, and I loved him way more than Sebastian, who I saw the second night.
"This table, he is over one hundred years old. If I could, I would take an old gramophone needle and run it along the surface of the wood. To hear the music of the voices. All that was said." - Doug Wright, I Am My Own Wife