Melbourne
From Trashwiki
Melbourne, Australia, has some good places for dumpster diving.
The best place to find fruit & vegetables would be Victoria markets located in the middle of Melbourne CBD. Go there in the afternoon of either Saturday or Sunday & you will be certain to pickup a selection of produce.
Preston markets, located outside the CBD (Bundoora/RMIT tram, plenty of stops from city), might have similar results on the weekend.
Coburg in the northern suburbs of Melbourne have many famous dumpsters off Sydney road; other suburbs including Northcote and Brunswick also have many good dumpsters, mainly "Safeway" and "Coles" supermarkets.

