IPMS NSW International Plastic Modellers Society - NSW Branch (my local club) Modeling website run by Gary Wickham
HyperScale An Australian based modelling website that has a very active forum, product reviews and model gallery.

Aircraft Resource Center

An excellent source of images, articles and general information on modelling scale military aircraft. Highly recommended.

TwoBobs Decals

Limited run, high quality decals featuring mostly modern US jets. Great site with loads of information and colour pics of decals and reference material.