Massive "event" gigs currently seem to be in favour at the moment, with Live8, Live Earth, and last saw one of the biggest to date, and most worthy: 46664, to celebrate Nelson Mandela's 90th Birthday and also to raise awareness of his AIDS charity's work. You've probably heard about it in the press - the whole Amy Winehouse will she turn up / won't she turn up situation, the issue over whether Nelson Mandela was......