I think we can all agree that he is the living legend of metal. Being the frontman of the band that started metal's long stand in the music world with Black Sabbath and years as a great solo. However, is it time he retired? I saw him in December 07, and after 3-5 songs he's performing off of oxygen puffers. He's truly made his mark and will never be forgotten, so should he take his bow now or do you think he's still got a few more in him?