In case you haven’t read about it, Transcending CSS is due for publication in the near future, and should be a really interesting read. I would pick this up if you’re interested in visual design for the web, or simply have to implement more interesting or complex visual designs.
I’m currently reading the paper version of Joel On Software on recommendation from Martin. It’s quite addictive reading, and generally provides very good coverage of the main reasons why software projects go wrong, and the key things that you should ensure are put in place to avoid this.
I think most people would benefit from putting on their humble shoes and reading this to reflect on their own practices and what can be improved. It’s also extremely enjoyable and easy reading, which is very hard to come by with technical material.
