Three things that are different in Sydney:
1. The morning paper arrives wrapped in plastic wrap, not in a bag that provides a second service as diaper or doggie poop holder/disposal.
2. Talk radio is called "talkback," which makes some sense.
3. Almost everything is smaller: paper towel rolls are a good two inches or more shorter than their American counterparts and look squat; you cannot find huge cups of coffee, like the Starbucks venti, except in the Starbucks at Hyde Park and Park Street, and that venti is smaller than the U.S. venti. (So paper towels and coffee are "everything"?)
Those are just three things I noticed this morning.