Wikipedia:Articles for deletion/List of pop culture references in Warcraft
1) "Something anybody can observe" is most certainly  (as is "common knowledge" which in most cases the editor means "common knowledge to their demographic in their location", which is horribly systemic biasish). 2) Not everybody has access to the medias in question (WoW requires a subscription, etc) so this isn't something "anybody can observe". The Milwaukee Journal Sentinel reference, however, is a start
— User:ColourBurst, 19:10, 9 November 2006 (UTC)
Stance: comment
Cited policy: WP:OR (Wikipedia:No original research)