I recommend to any aussies:
Final Fantasy Crystal Chronicles - My Life as a King: Great sim style game, just think of it as Harvest Moon, only swapping the farm out for a city. Eases you into it, and has a lot of depth, and will probably take you between 10-15 hours on normal if you go at a basic pace (that is just finishing it, wont include beating everything else) and another 30+ hours if you do it on Very Hard.
Lost Winds: Very high quality 2d platformer with 3d graphics. Great use of the wiimote, fantastic graphics and gameplay overall. Only about 3-5 hours long, but it's worth a second play through, and it's just one of those games that is good to have in your collection.
Dr Mario: Updated from the NES classic, still a great game, with some good features including online multiplayer, great value for its price, and a good puzzle game always gives you plenty of value.
