Admitted high-school drop-out. Some of his arguments are... quite original, and this is the best that could be said about them.
- I don’t know if man went to the moon in the sixties, April 29, 2012
- How many cubic feet were in the Apollo Command module, May 09, 2012 (there was too much stuff to fit in it!)
- 15 miles of wire: guess the volume, May 09, 2012 (not started by him, but has some participation)
- The official audio Record of Apollo 11, May 10, 2012
- TOO MUCH EDUCATION, May 16, 2012, starts with the following and then gets better: "Has any one on this seemingly highly educated site ever thought that just maybe you have been educated so well that you might have forgotten about Common Sense." A numbered list in all-caps follows, starting with "YOU HAVE NEVER BEEN TO THE MOON!".
- A FAIR DEBATE, May 26, 2012
The really sad part is that some of his arguments would make somewhat naive, but good questions about spaceflight if they were not presented as nails in the coffin of the Apollo program.
Oh, and after losing the discussion, the twerp went and manually deleted the text of all of his posts. The OP of each thread was later restored from Google's cache, though.
That man is a national treasure.
- On privatizing NASA (whole thread, his post is several down)
- Every conspiracy theorist thinks he's a scientist and every conspiracy theorist tries to beat his critics over the head with "The Scientific Method," which is invariably a hodge-podge of layman's misconceptions aimed at trying to shift the burden of proof and arbitrarily raise the bar for his critics. You have no idea what the scientific method is or how it applies to this question. 
- Kevin Overstreet (The Moon Shots Were Faked) was one of the earliest Apollo landing deniers on the Internet (his page was "last updated" in 1999) and one of the causes why Jay Whindley started debunking their claims. Ironically, he apparently ended up working as a system administrator for the company hosting Whindley's clavius.org, and later, working for Whindley himself. "I was only 15! Give me a break!"
- Wowbanger: "I'm fine with how things are." "Yeah, but many aren't." "I SAID I'm fine." "I believe you. But others aren't." "BUT I'M FINE!" #FTBullies
This section will probably grow very, very long. :D
- As of January 2012, the article of wp:Open notebook science lists Steve McIntyre as a "practitioner of Open Notebook Science" and the Climate Audit blog as his "notebook" (it was added in 2009) The article's state is interesting in itself - the majority of the references are to Jean-Claude Bradley, the founder of the movement, including one reference to a comment he left on a blog...
This would probably need its own sub-page if I remembered to save stuff more often.
- PowerSmokeAndLeather removing a link to a work by Schopenhauer hosted on Wikisource: http://rationalwiki.org/w/index.php?title=Romanticism&diff=prev&oldid=1238670
- An actual edit summary: "Removed the pseudoscience navigation template in accordance with approval given by ZooGuard that occurred on 16:16, 15 October 2013 (UTC) in the talk pages."
- Weaseloid: "Unfortunately I don't think there's much overlap (at least at RW) between people who care about this subject and people who can write concise, relevant, interesting content about it." This is one of the major reasons for the situation described in the quote currently on my userpage...--ZooGuard (talk) 19:04, 9 April 2014 (UTC)
- GreatNecro: "Not only did Nungesser provide evidence that their relationship continued normally after the alleged incident and was never abusive, but Sulkowiczs provided no evidence that the rape actually occured, beyond the anecdotal." (a bit later they rewrote the post, probably after realizing what "anecdotal evidence" actually means)
- "what is the difference between a reactionary and a neoreactionary or a racist and a neo-Nazi?" (edit summary of an edit conflating the groups in question)
- RW may have reached peak hidden link abuse:  A bad, TVTropes-style link joke, with an external link to a TVTropes page. Their page for "Incredibly Lame Pun".--ZooGuard (talk) 19:18, 27 May 2015 (UTC)
- 2017-01 RBP finds out what a certain piece of wiki-culture means some time after becoming a moderator
- CMV:RationalWiki is just as bad as Conservapedia, and both are bad for society as a whole - notable not only for the thesis, but also for the chain of thinking in the OP
- Melody Hensley links on Twitter to an article about "sociopaths" on Sign of the Times.net (*cringe*) The usual suspects gleefully tores into her (as usual), in the process linking to RationalWiki. () Wait, I thought we were "overran by baboons"? And nobody used us/should use us?
- From a comment by one rm on Lawyers, Guns and Money post about some fuming creationists:
I think this is Pastor Singleton’s logic:
Children are property.
Children are either the property of the Church, or of the State.
If children are the property of the Church, 100% of everything in their lives must come from the Church.
If less than 100% of everything in their lives comes from the Church, they are no longer the property of the Church, and are now the property of the State.
There are no neutral ideas — all ideas, facts, and pieces of information must serve one master, either the Church, or the State.
If children are given an idea that is not from the Church, they are being claimed by the State, which is Fascism.