"My quest is a long one and it has no end. It's a wonderful thing to do and it's surrounded by great people. And I brought you a little present from our stock room," says Plant as he dips into his front shirt pocket and pulls out what looks like a joint. "I think it's one of the accessories of not quite being a knight in the British Empire, but on the way."

"What is that?" asked the Comedy Central host. "I'm not� let's find out what this is later, shall we? And for the purposes of my lawyer and the network, this is a cigarette."

Plant and The Sensational Space Shifters then played the album's lead single, "Rainbow", on the program and recorded a web-exclusive performance of "Little Maggie."