“Sometimes You Have to Pay a Heavy Price to Live in a Free Society”,
by Chelsea Manning.
How to review formalized mathematics, by Andrej Bauer.
An elementary illustrated introduction to simplicial sets, by Greg Friedman.
Pretty nice and well motivated.
plain.tw (PDF), a literate version of plain.tex by Włodek Bzyl.
The church of interruption
Chess implemented in sed(1), WJW.
I want the littlest butt…