Category organization

Hello,

Does anyone know of a plugin that will customize the admin category area? I would like to display categories with a series of drop downs, check boxes, radio boxes and have required category choices. I have a site that will have hundreds of category choices, and I seek a way to display the category choices (for contributors, authors, editors) in a user-friendly way. The standard check box display is cumbersome when dealing with so many categories.

Any help/direction is appreciated.

Thank you.