In terms of "code with explanation" layout, I really like todos.js' approach: http://backbonejs.org/docs/todos.html
It also works with images: http://www.ifixit.com/Teardown/Mac+Pro+Late+2013+Teardown/20...
Most layouts nowadays fail to take advantage of the horizontal space available. It's just 2 colums in the end, but it goes a long way.
Just out of curiosity, why did you include that? Do people make judgements about tools based on the person who wrote it?
It's the same thing with novel authors - I'm much more likely to purchase a book by Stephen King than an unknown author's debut album if that's all I know about the books.
But yeah, it also gives it some star power and instant credibility, and I wanted to highlight jashkenas for his significant contributions. (As a side note I don't currently use any of them, I prefer Angular and vanilla JS syntax.)
I was going to bring up the IPython notebook functionality, in part because it was used as a follow-up to another xkcd strip ("Regex Golf", http://nbviewer.ipython.org/url/norvig.com/ipython/xkcd1313.... ), but I gotta say that one looks nicer :) The use-cases are slightly different, though.
... todos.js' did it better though.