The gender switch accounts for her amazing effect; Dame Edna puts us all in touch with our inner bitch. Inside all that mauve is her mordantly brilliant creator, Barry Humphries, also an actor, novelist, poet, painter and the last great exponent of the classic British music hall. Humphries, 65, by now is more Edna than Barry. He’s added some Lettermanish shtik, telephoning audience members’ babysitters from the stage. That’s unworthy of the great Dame, who should be running for office. What an Aussie prime minister she’d make, giving new meaning to the phrase down under.