Good article I found late at night while perusing Zite showcases some JQuery plug-ins.
Here are my favorites from the full article on splashnology.
This plug-in rocks. Not only do I plan to use it in the future, I plan to use it in the past. This provides a simple JQuery syntax for cross-browser CSS3 transformations, taking advantage of hardware/browser accelerators when possible. Supports JQuery chaining in a very simple way, so you can string multiple transforms together that will run synchronously. No need to worry about -webkit- or -moz- or -blahblah-.
Now this is super-cool. Sisyphus, when applied to a form, will use the local storage features of HTML5 to store (er, locally) all of the values you are entering into the form. So, if you time out, or close the browser accidentally, the power goes out, etc., all you do is come back to the page and — presto — all of your form entries are back. Includes support for all form elements, too.