Dynamic Widget is a plugin for JQuery UI that automates lazy loading JS and CSS for your JQuery UI widgets without the need to worry about includes.
iSayme
If you load your posts which has gist embed dynamically, the plugin is just for you.
Brian Detering
Forminator works by using class names and data attributes supplied in the HMTL markup to declaratively build dynamic, ajax interfaces.
Tzechiu Lei
A jQuery plugin that transforms your empty DIV into a dynamic, semi-circular value-meter. 2.6k minified. Works in Chrome35+, Firefox29+, IE9+.