More Pathological Monogamy
Feministe clued me in:
Man Severs Penis to Prove Faithfulness. He's recovering after a lot of blood and a surgery to reattach the organ. The article does not tell us whether his wife was convinced of his fidelity by watching his penis fall to the floor.
And, while I'm on the subject, I found this awesome article the other day: Monogamy as a Prisoner's Dilemma. Which is bizarrely right-on.