I know we don't need any further evidence that Geldof and Bono's outsider act is, well, an act, but in case you're still looking to be convinced, who turned up for Matthew Freud's birthday in what for most people would be the 'clown making balloon animals' slot?:
Guests thought to include Davina McCall and Jimmy Carr were treated to a performance from Bob Geldof and U2 frontman Bono. The duo joined forces to perform a rendition of Martha and the Vandellas’ Dancing in the Street.Amongst the revellers were the Blairs, Cameron and Osborne.
But I'm sure Bob and Bono were thinking about the poor the whole time they did it.