Richard Thomas has released the latest version of his extensible framework today - jQPie 0.3.

The main thing in this release is the addition of an auto complete and a grid example based of the extjs library, One thing to keep in mind the css files provided by extjs will overrun pretty much any css you have, the main one being ext-all.css, It seems some things are set in here that are required for the examples to work but at the same time it styles pretty much every element in existence.

jQPie is a "a lightweight PHP interface to jQuery. The lightweight interface allows multiple ways to interact." It also has a plugin interface that allows other modules to be built on to the core functionality. Check out its wiki for more information.