I too have always been interested in Australia and have wanted to take a trip at some point.
At my first school, we studied Australia in first grade and one of my buddies had his grandmother come in to talk about it (she had been there). One of the things she had brought in was vegemite, which only one guy in our class tried. He wound up spitting it out, and this guy was known to consume anything. I'm not sure what exactly is in it or if it's really that huge of a huge deal in Australia, but I'm sure some of you Aussies can help me out on this one!
When I moved, we did something called International Days every April at my new school. This involved each grade level researching and presenting on a country. The fourth graders always did Australia. My role in the presentation was to share about the great white sharks. I got to stand in the hall near a poster and speak in a fake Australian accent as I told the students about the animal. Yes, I did greet each class with "g'day, mates".
Also, not sure if the Aussies on here know about it, but we have a place in the States called Outback Steakhouse. It's supposed to be Australian in theme, but most of that seems to be some of the decor and the names of the items (like Kookaburra wings). It's not a bad chain steakhouse, but not somewhere I'd go on a date--it's a bit noisy and bar-like. It's best for a night out with your pals, er, mates. Woz is a huge fan of them (evidently he eats at the one near Cupertino several times each week), as is former Pittsburgh Pirates catcher Jason Kendall (who used to eat at the one near me).