VegePlan is a pet .Net project I have been working on to get up to speed on AJAX and LINQ.
It is a basic drag-n-drop vegetable garden planner and designer.
I have openend it up for anyone to use here:
www.vegeplan.com
I have used the JavaScript Prototype library for the AJAX, and YUI and the Ajax Control Toolkit for the drag-n-drop and other UI functionality.