http://www.scarysextoyfriday.com/ (probably NSFW)
Let's say you want to do cumulative trapezoidal numerical integration in Matlab:
http://www.mathworks.com/access/helpdesk/help/techdoc/ref/cumtrapz.html Or maybe strictness analysis in Haskell, using the StrictAnal module:
http://hackage.haskell.org/trac/ghc/ticket/3056#comment:2