"The spandrels of San Marco and the Panglossian paradigm" (1979), Proceedings of the Royal Society of London, B. 205, pp581-598
Gould, S.J. & Lewontin, R.C.
A highly influential critique of uncritical use of the concept of adaptation. Cain (first paper in this collection) provides an interesting different perspective in what is one of the great eteral debates of biology.