If you want some explanation for why "List_of_World_Wrestling_Entertainment_employees" ranks ahead of Jesus, MJ, etc, here is the source. There are also some published papers that I haven't read.
Do yourself a favor and make it to the end of the list. 100th article? "Truth."
"List_of_Barney_&_Friends_episodes_and_videos" is another odd one. I'd never heard of Transnistria before this, which makes me surprised that it's one of the most controversial articles...
There is something wrong. Checking http://en.wikipedia.org/wiki/List_of_Barney_&_Friends_ep... shows almost no edits. According to their method, found in this paper http://journal.webscience.org/523/1/58_paper.pdf they define controversial using a metric around mutual reverts by pairs of editors (each one reverting the others work).