Interesting, can anyone create a watch list like this? Is there documentation of how?
Yes, anybody can do it, You can have as many different lists as you like, too. I have put some articles that I've removed from my Wikipedia Watchlist into a page called [[User:Tony Sidaway/Watched]]. It's just a list of wikilinks to the articles. A button on my user page contains a link to the following URL, and I just click the button to see recent changes to articles on the list: http://en.wikipedia.org/wiki/Special:Recentchangeslinked/User:Tony_Sidaway/W... This enables me to have a relatively small Wikipedia watchlist for day-to-day use but still oversee many articles via a list that I check from time to time. On thing to watch for is that if you insert images or categories into this list make sure you put a colon before "image:" or "category:", otherwise the image will appear in the watchlist (and not just a link) or the watchlist will be added to the category (again, not just a link).