Type in "WP:FAC" into the search. Believe me, it's more rigorous than pretty much anything I've eve seen. About 6 years ago I wrote the article on exploding whales, and this hit the main page. Now it's not even featured any more!
People went a little exploding animal crazy, if I recall correctly :-)
I did a lot of things on Wikipedia. Perhaps my most lasting creations will have been [citation needed] and the admin's noticeboard. Though I have, perhaps, a somewhat dubious legacy, it was a fairly amazing experience - rather marred by the manner in which I had to leave the project.
