Display list of parents with children

Issue Summary

I have a category-item hierarchy, and I'd like to be able to create a list like this:

Category 1
Category header
- child 1.1
- child 1.2
Category footer
Category
Category header
- child 2.1
- child 2.2
Category footer

I already have a view (Views 2 module) working that gets me the children for any parent in the format I'd like, but it only works on the page for the parent item. What I'd like to do is create a "view" that gives me all the parents (according to some filter) with the children for each parent displayed according to my already defined child view.

Any suggestions? It seems to me that this might be a fairly common requirement, so ideally I'd like to eventually create a tutorial for it, possibly even providing a few methods/modules to achieve this display (assuming there is more than one way to do it, if at all).

Thanks.

Colin