A streamlined interface for building Views. Administrators make a few simple choices (What kind of content should be listed? Do I want to sort by date, or by title? etc.) and a view is generated on-the-fly. Because the Views API is used, the resulting views can be modified using the full Views UI module.
In addition, every content type gets a simple checkbox on its configuration screen: "Make a listing page for this content." When it's checked, the module... makes a custom listing page, complete with RSS feed, filtered to just that content type.