http://jquery.malsup.com/

BlockUI Plugin Simulate synchronous ajax by blocking – not locking – the UI. This plugin lets you block user interaction with the page or with a specific element on the page. Also great at displaying modal dialogs. Corner Plugin Rounded corners without images! Plus lots of other interesting corner adornments like bevels, notches, dogears, etc. …

jPlayer

jPlayer is a jQuery plugin that allows you to: play and control media files in your webpage create and style a media player using just HTML and CSS add audio and video to your jQuery projects support more devices using HTML5 support older browsers using a Flash Fallback control media on your website using a JavaScript API jPlayer supports: HTML5: mp3, m4a …

Jquery Edit In Place

What is it? Another In-Place Editor is a jQuery plugin that turns any element or group of elements into an Ajax in-place editor using only one line of code. It’s written using the jQuery Library, which is available free at http://jquery.com. I saw this on Flickr a while back and I thought it was really …