Below is a list of documents that have cited Wikipedia as a source and are of general interest to Wikipedians, but don't fall into one of the other categories (see right).
23 February: The active noise control article is referenced in a discussion of how noise-cancelling headphones work by Scientific American. The article says, "There are several websites that explain how these headphones work, so a simple google search will lead you to them, but really, Wikipedia does a fine job if you don't mind a bit of physics terminology."
29 June: Signpost for the new street "Erika-Mann-Bogen" (English: Erika Mann drive) in Hamburg, Germany, citing Wikipedia for the explanation of its name.
February: Steve Wander, ed. (February 2007). "Supercritical"(PDF). System Failure Case Studies. 1 (4). NASA. (an internal NASA safety awareness document) lists SL-1 as a reference.
Sprite launches "sublyminal" campaign. Entering "illusion" as a code on the sprite website unlocks several lines of text from wikipedia, and the URL of the article floats around the screen
The Parliament of Canada cites Wikipedia's article on Same-sex marriage in the further reading list of Bill C-38 (An Act respecting certain aspects of legal capacity for marriage for civil purposes). [6]
In Apple Computer's announcement that one of the winners of its OS X Tiger Dashboard contest is the "WikityWidget", it links Wikipedia's wiki article to explain "wiki technology".
"Ash recalled that one time, before giving a lecture on a novel by 19th century author Samuel Smiles, he turned to Wikipedia to see if he could find some supplemental information.
"Ash said, 'Wikipedia had one screen of information. I learned he’d written other books' besides the one he was lecturing about."
Kilmer, Mark. "Fatwa Against bin Laden". March 10, 2005. Redstate. [8]
Wikipedia defines a fatwa as "a legal pronouncement in Islam, issued by a religious law specialist on a specific issue." OBL does not qualify, while the Spanish Islamic Commission just might. And they've issued a fatwa against bin Laden for making up Islam as he goes along.
Crouch, Dennis. "Intellectual Property Podcasting". March 17, 2005. [9]
Podcasting is catching on as an extension of the blog. According to the Wikipedia, a podcast is like an audio magazine subscription: a subscriber receives regular audio programs delivered via the Internet, and can listen to them at their leisure.
The American Numismatic Association's biennial publication, Discover the World of Money references Wikipedia's article "Marianne" in an article about that figure on French coins and currency.
"Mel Gibson's Film "The Passion of the Christ" - AN INTERNATIONAL HOAX" references Wikipedia on a number of topics, particularly Aramaic. It is a document which refers to many sources in order to demonstrate that "The Passion of the Christ" is a Satanic film designed to trick good Christians into worshipping the Antichrist.
Parliamentary Joint Committee on the Australian Crime Commission, Cybercrime. Cites worm, virus, payload and trojan. [15]
Mark Doernhoefer, Surfing the net for software engineering notes, ACM SIGSOFT Software Engineering Notes (November 2003). Has a section about wikipedia.