I'll chime in to debunk some common misconceptions (many of which are admittely tongue in cheek)
The Deadly wildlife. Not really a problem unless you head to the outback. That big spider on the OP? That's a huntsman, yes its big, but also a big harmless wuss that will run from you. You should probably be more concerned of smaller spiders like the redback.
Game Censorship. In paper we have an opressive no R18 games regime. In reality, not so much. 95% of games rated R18 elsewhere are still sold here under the pretense of M15. Yes, younger people can play GTA here legally, go figure. 90% of these come here uncut. And for the rest, whether cut or banned we just import. For years its been more of an insulting situation than a real problem. Not to mention the R18 classification was recently approved, although bureocracy will make sure it will take at least a year before games are classified R18.
Things are expensive. Whilst this is true, lots of people just e-shops overseas (and skips GST in the process). This is starting to put pressure in our retail to the point some big names are starting to look at the grey market. Services do remain expensive, though, don't get sick here, seriously.
Accent. OZ is so multicultural, that's a moot point these days.
I'll add a good point: people is very relaxed and laid back.