Hugh Jackman is somewhere between the moon and New York City.     Cast as Peter Allen in a Broadway version of The Boy from Oz, he told the Herald Sun: "It's quite an honour to be playing him.  It's quite a task to try to fill those boots, but I'll give it my best shot.     Jackman will be in New York next month to workshop the hit musical, which had a sell-out run in Australia in 1998.     "The producers Ben Gannon and Robert Fox approached me to do a kind of reworking of it with the intention of going to Broadway," he says.     "But it's not a commitment from either side of the fence.     "The idea is to show the production to theatre owners, producers and investors and see if there is the interest for the show in America.     "It's easy for us to think it's a hit show, but we have such a great knowledge of Peter and love of Peter.     "In America there is a small group of people who know and love him, but he's not a well-known name."     If The Boy from Oz workshop goes well, a full production could open on Broadway early next year.     Jackman, busy promoting his latest movie, Kate and Leopold, says: "I have to take inspiration from Peter Allen and just go for it.  My maracas are coming out!"