Hover Captions is a jQuery plugin that enables you to display caption overlays with cool effects over images, div's, ect..  

Ion.ImageSlider is a nice image slider plugin with lightbox and skin support.  

novacancy.js is a text neon golden effect jQuery plugin.  

aToolTip is a simple, lightweight, cross browser compliant and highly customizable tooltip plugin for jQuery.  

least.js is a random and responsive HTML5 & CSS3 jQuery gallery plugin with lazyload.  

Dynatree is a JavaScript dynamic tree view plugin for jQuery with support for persistence, keyboard, checkboxes, drag'n'drop, and lazy

FullCalendar is a jQuery plugin that provides a full-sized, drag & drop calendar. It uses AJAX to fetch events on-the-fly for

jQuery.scrollpanel is a jQuery plugin to create a vertical scroll panel in a container element. It replaces the native vertical browser

Scrolltab is a jQuery plugin that adds tabs visually associated to their position relative to the scroll bar. This enables

SlipHover is a jQuery plugin that applies direction aware 2D/3D hover animation to images or any other elements.