They have been called the greatest rock and roll band in history. No, not the Stones, although that would be my choice, we are talking Led Zeppelin here. Check out this video promoting the release of Celebration Day. The reunion of Zeppelin was one of the most highly anticipated events in rock. We will get to experience this one time event on November 19th, when their concert DVD is released.."Celebration Day". Check out this trailer and tell me it doesn't just get your blood boiling. There is only one Led Zeppelin, and here they are!