Check out this sweet plugin that replaces standard select boxes with a search/autocomplete widget. It manages to transform long clunky select lists to something that is a breeze to use… From a quick glance the design and implementation is flawless.
http://harvesthq.github.com/chosen/
Ok, it’s almost flawless. The plugin could be even better if it accepted values not already present in the select box and could serve as a combo box instead. I hope this feature will get implemented ASAP. Many people are requesting it already.
The plugin was written in CoffeeScript by the team behind Harvest and is compiled to standard Javascript in two flavors (Prototype and jQuery versions). These guys rock I can tell you!