This is simply one of the better resources for CSS that I have stumbled across: CSS Techniques I Wish I Knew When I Started Designing Websites. I really don't have anything to add, except to say that I really hope somthing like Sass becomes a standard. CSS is great, but repeating oneself is not.
I have a few items I have had pending, but never got around to a full write up on. Today's "needs to leave the list" entry is by Seth Godin. Seth Godin is an interesting pundit who talks a lot about marketing and professional development. He has written quite a few business books that I haven't read and quite a many blog posts which I have. I wholeheartedly recommend his blog if you are interested in business marketing topics.