A Modern Web Development Syllabus
Chosen is a javascript plug-in that makes long, unwieldy select boxes much more user-friendly. It is currently available in both jQuery and Prototype flavors.
JavaScript/jQuery training videos.
http://jqapi.com -- a cool jQuery documentation project.
Developed by IBM, hosted by the Dojo Foundation: Maqetta, an online WYSIWYG authoring tool for HTML5 user interfaces.
MobilyBlocks, a jQuery plugin (2KB) that allows you to create an unordered list as an animated circle.
jQuery tooltips!
pdf.js - create basic .pdf files in the browser and node.js
Yet another jQuery slider! These things are getting more polished and complex, with no obvious sluggishness.
HTML Slidy: Slide Shows in XHTML