"I think we were really propelled by Jason (Bonham) and his enthusiasm and his dark glasses. He really brought the atmosphere and expectation because he knows far more about us than we do. He's got all the bootlegs, and he's in touch with the people who make the bootlegs." Robert Plant credits the son of Led Zeppelin's late drummer John Bonham with bringing the existing band members back together for their 2007 tribute to music mogul Ahmet Ertegun in London. The concert movie of the groundbreaking reunion is set to debut in cinemas later this month (Oct12).