For the linguistically inclined: 'Strine younger than thought.
Even in the '80s Aussies were still saying "be-ah" (and saying it a lot, if I remember correctly. Which I do.)
Funny; just this morning I was thinking that Aussie/Kiwi and even South African accents and cultural referents seem a lot more Englishy than American ones do, and wondering when the various sociolinguistic splits occurred.
Also I recently remembered a Norwegian friend's years-ago conjecture that the notorious American "arrr" (r) came from Irish immigrants, after we watched some movie with Irish people in it. Made sense to me at the time, though I don't know much linguistic history. (Linguistory?)