Open source library that uses JavaScript and SVG to render graphs and visualisations without a plugin. There are some lovely examples of what you can do with it: graph pr0n.

Some nice sets of free application icons

Excellent song: "Code monkey think maybe manager want to write god damned login page himself" [via Doug Miller's tweet]

"Spiffy Corners is a simple way to generate the CSS and HTML you need to create anti-aliased corners without using images or JavaScript."

Interesting technique for displaying images overlaid on the webpage, avoiding any width limitations of your layout.