One of my private fantasies is to ship a task to an outsourced (in the worst sense) organization and specify that they must use Haskell. I can't even imagine what monstrosity would come back, but I bet it would be hilarious.

Personally, I rate the perversity of bad coders as being well above Haskell's ability to prevent perversities, but the fight would be truly epic and produce months worth of tdWTF fodder. I don't know which would be worse: Them discovering unsafePerformIO, or them not.