"You listed HTML under programming languages, didn't you? Argh!"
IMHO, there's absolutely nothing wrong with listing HTML on one's resume, especially if one actually knows the context and how to use HTML to do something besides make text (for example, render) bold or italic.
Plain text resumes can indeed work to get information across, but if ever there were a way to demonstrate actual ability to code electronically, a resume coded in HTML would be that way. Resumes are about presentation. HTML, coupled with CSS, is a valuable way to demonstrate ability to present plain text.
Actually, thinking about it, most programming is essentially about presenting or rendering or parsing plain text, is it not? I would rather see somebody's hand-coded text/HTML resume than a plain-text text/text resume with (undemonstrative) HTML listed as a skill.
More on why job search is broken (and part of my startup philosophy):
There is a lot to be said for the meaning of irony when companies who claim to want creative and "out of the box" thinkers request that potential employees visit their website in order to submit the info on their resumes via little, pre-formatted text boxes.