Fixing 24-bit transparent PNGs background positioning issues for IE6. This uses VML instead of AlphaImageLoader so you don't lose the clicking ability that happens with AIL.

Javascript is actually fairly expressive and here are few of the nice, hidden gems of the language.

A quick rundown of the how to write a valid (X)HTML and nicely degrading features with jQuery

"J is for jQuery. Spontaneous applause from the audience."

Lots of good tips here about the big sticking points of designing for the web.

Good examples of JS best practices of having content and behavior separated as much as possible.

Firefox extension to automatically create lorem ipsum text.

Javascript that will give you all the nice pseudo-classes like :first-child and :last-child that are in the CSS spec but not handled consistently in all browsers (or at all in IE6).

A nice reset, base, and typography css. Basically blueprint.css without all the grid stuff. Also includes a compressed version.