Timeago: Timeago is a jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. “4 minutes ago” or “about 1 day ago”).
Flexselect: Flexselect is a jQuery plugin that turns select boxes into flex-matching incremental-finding controls. Think of it as Quicksilver squished into a select box.
Facebox: Facebox is a jQuery-based, Facebook-style lightbox which can display images, divs, or entire remote pages. It’s simple to use and easy on the eyes.