Great to hear everyone's good experience with this tool. I think in terms of aviation graphical forecasting, BoM has nothing similar to this website yet. I agree with Mark that the computing power required to produce these every 4-6 hours or so would be massive. In saying so, the one graphical forecasting tool I do regularly look at on the BoM website is their MetEye product.
http://www.bom.gov.au/australia/meteye/
To me, MetEye is NOT a one stop shop for flight planning (there's no levels, just surface conditions). But it paints a decent picture of where and when they're expecting weather like showers, drizzle, TS, fog etc. It seems to be updated twice a day about 5am and 5pm as well.
Tony