Categories/sub categories

Product categories and sub categories.

Allow us to offer categories/subcategories all the way down to any level we need. Allow us to create a category and use a picture, create sub categories w/in it and have pictures, and so on. This would give ultimate flexibility and not clutter up the product pages too much.

For example

Hosting
-Dedicated
-Managed
-plan 1
-plan 2
-Unmanaged
-plan 1
-VPS
-Shared

And no I don't want to have to hard code a solution using tpl and html ;)