Eat, Pray, Laugh! Barry Humphries' Farewell Tour, London Palladium
London Palladium: If it's possible to be a national treasure when you're a foreigner and an Aussie to boot, Barry Humphries, or at least Dame Edna Everage - his most enduring creation - fits the bill. She hit the scene in the mid-1950s when Humphries was just into his twenties. But that's almost 60 years ago, how can the old gal - or 'gigastar' - still be out gadding? Well, possums, the fact …