You know, it's hard to describe this without making it seem as though that's wine snobbery, but truly it all has the air of people discussing what pizza toppings they prefer or what sort of desserts a particular restaurant has.
When I bought my first book about Australia last summer, a general tourist guidebook, it started to seem funny to me that each area I read about was described as being a wine-growing region. Of course I was mostly reading about places I'd be visiting, but even so it was clear that this country has become a vast producer of wine. In fact, for pretty much the last year I've been drinking mostly Australian wines myself, in preparation for this trip, and under $10 bottles (my general limit) are readily available in the US. What's amazing is that the entire Australian wine industry has pretty much developed in only the last couple of decades, I believe.
Most of the labels are pretty cool, too.