Rich, powerful AJAX tables provide a greater impact in usability to web applications than just about any other widget.  One of the best of these is the extJS table. Some highlights:

• Inline editing based on data type (calendar for date, spinner for numeric etc)
• Validation of inline edits
• Custom sorts
• Able to utilize existing tables, XML data files & JSON data
• Paging & Remote data support

More information on ExtJS table will be coming in part 3 of the extJS POG tutorial

• Simple, Client Side Table Pagination from Frequency Decoder
• Dojo Grid Lands in Trunk For Oct 31’st Release.
• TableCloth: Enhanced Tables from CSSGlobe
• Getting and setting values for jQuery widgets
• Taking The Web To The Desktop Part 3 Widgets
• Spectacular, Unobtrusive Table Script From Frequency Decoder
• Ingrid: A Server-Side Table Widget for jQuery
• Create Slick, Scrolling Panels with jQuery & Coda Slider
• An Ajax Image Gallery That Doesn’t Break the Back Button: BackBox
• Attach Elements To The Viewport With Clientside’s Element.Pin Mootools Plugin