A few of the articles I started: Blaze Starr, All Things Considered, Cricket magazine, Neko Case, This American Life, Q Score, and Seattle Central Library. Most of those have undergone substantial revisions since my initial efforts.
And I kicked off interrobang, appropriately enough.
Likewise!
I made some substantive changes to the Samuel Beckett entry, but the vast majority was done by others. Still, I was kinda proud that my changes were discussed and accepted by the way smarter people who wrote most of it. I’ve added to a couple more too, but can’t think what they were just now.
I discovered a gross oversight on Wikipedia today- and so soon after registering, too!
There was no entry for the Martini-Enfield rifle! :eek:
Seems rather appropriate that my first complete Wikipedia article is also my namesake here on the SDMB! 
I have been around for a long, long time (before it was famous) and have made a buttload of edits, including essentially starting many of their pages on Canadian geographical features and gay and lesbian issues.
My most notable contribution was probably writing the original article on Steak N Shake. The article has since been improved and expanded substantially (it has also been redirected so my name isn’t at the bottom of the history. If you follow it back through the redirect, you can see my original article here).
Don’t “um” at me, EH. It goes like this:
At the climax of the episode, Kirk, Spock, McCoy, the insane Capt. Tracy, and the surviving Kohms are dragged before the victorious Yangs, whose leader Cloud William begins reciting the " ’ Ay Pledjeli’ Holy". Kirk recognises it as the Pledge and finishes it, to general astonishment. A row breaks out in which Tracy denounces Kirk as a devil (and points out his “servant” Spock’s Satanic appearance, unfortunately borne out by a picture in an illustrated Bible). To prove Kirk’s credentials, Cloud William proposes that he repeat the above feat with the still more sacred “Eed Peebnista”, which the Unholy One could never recite without spontaneously combusting. Unfortunately William’s pronunciation is so sloppy and devoid of meaning that Kirk does not recognise it as “We the people of the United States…”, and only after he defeats Tracy in a typical shirtfest is he allowed to actually see the sacred text.
Feel free to, y’know, actually look up the Wikipedia entry and see what I wrote. :dubious: It doesn’t read exactly as above 'cos I wanted to disturb the original entry as little as possible.
I created the entry for Champion Base Ball and greatly revised and improved the entries for Lady Bug and Bank Panic. 1980s arcade games aside, I created the stub for *Kevin and Trudie*, a radio talk show hosted by long-time friends of mine.
More significantly to the readers here, though, I greatly rewrote and improved the “Plot Summary” section of Watchmen. I keep an eye in it, since a lot of people seem to feel compelled to introduce irrelevancies.
And I write under my own name, too.
I like the Eed Peebnista bit almost as much as I like this new term “shirtfest” 
I found my knowledge of Trek too sparse to add much if anything to the Trek articles, I did use my knowledge and back catalogue of Philip K Dick books to add a few titles in, namely; Project Plowshare, The Zap Gun, We Can Build You, The World Jones Made, Our Friends from Frolix 8, The Game-Players of Titan, The Unteleported Man, Clans of the Alphane Moon and Dr. Futurity. When I finish “Vulcan’s Hammer” I might be able to put up more than a brief plot synopsis
I’ve made a few edits and added a couple of paragraphs to the article on Severn Darden, one of the co-founders of Second City.
Done and done!
I wrote almost every word of the Derek Trucks entry - there have been a few minor edits since then. I wrote a lot of Gregg Allman’s entry, too. Most of my other contributions have been grammar and language edits, sometimes to favorite topics and other times to whatever I happen to be reading, and I don’t always bother to sign in to do those. I went over the Arrested Development entry with a fine-toothed comb a couple of times.
I don’t know that I want to start cross-referencing my various names so easily, but anybody can check the Gato and Wolfpack articles I wrote. I’ve started a discussion about improving the Doctor Who episode guide. I don’t like how they’re written. Here.
I ran across this town, put it up for deletion, and next thing I know it’s http://en.wikipedia.org/wiki/Clonoulty
Thank you. As the originator, I’ll offer this definition, which I’m sure you understood anyway: “In Star Trek (TOS), yet another occasion on which a man in command of a 400-strong crew with advanced technology and weapons at his disposal is nevertheless obliged to resolve a conflict with a fist-fight, with the added detail that he appears to be losing until his shirt becomes ripped, after which (by convention) he becomes invincible”.
Nothing of serious merit, but I am tempted to write about the refounding of our schools hockey team. However, it appears they frown upon writing about your club, unless it is famous. Perhaps in a few years…