This is the master category, listing lists of things to do. It is similar in intent to the Community Portal "To Do" list, except it is a category.
If you are ever out of things to do, and feel like helping out by making WoWWiki a better place, well...just look below.
Useful "Special": articles
These would simply have been categorized as "Things to do" if it were possible to categorize special pages. It isn't.