I don't think they hear anything that'd make them want to emigrate. We just hear that most of the country is desert, even though when I actually went there everyone (in the cities) turned out to be tanned Scots obsessed with beaches and coffee.
If there's places Americans want to go, it's Canada, Europe or Asia, though I think their opinion of Europe is a little overrated if anything.
Also, you forgot Paul Hogan. And Kylie Minogue. And Nick Cave.
Also, while absolutely nothing sticks in my mind about either, the names of Kevin Rudd and Kim Beazley have been retained in my memory.