Number of quality free themes is not as high as it was, and best themes are premium ones. But from time to time, you can find a real gem like this FolioGrid theme. Clean and simple design, use of jQuery for various transitions, 3 color schemes and more.
Excellent list of resources for jQuery. Plugins are separated by usage and you can find many useful plugin (I did) for maps, charts, ajax and much more.
Great resource of code snippets, tips and other practical solutions for CSS, HTML, HTAccess, jQuery, PHP and WordPress.
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Oct 09
jQuery Comment Preview WordPress Plugin
This plugin will enhance comment form on your blog with dynamic preview and simple HTML editor for comment allowing your visitors to write more complex comments, and to see how the comment will look like once submitted.