For three days you can buy 5 PDF books for the price of 1 from Sitepoint and your money will go to the victims of the bushfires.
This addition to Firebug is rather excellent: a built in reference for whatever you're inspecting.
Rachel and Kevin's new book looks very interesting indeed. It is about just one thing: CSS tables.
Brian's article on portable social networks is a clear and concise introduction to the subject with explanations of the technologies involved.
Great article from Brian ranging from introducing microformats right up to the current state of play.