Alan Sokal's exposure of the FashionableNonsense of (some) PostModern''''''ists by having a spoof essay, "Transgressing the Boundaries: Toward a Transformative Hermeneutics of Quantum Gravity", published in ''Social Text'' in 1996.

His hoax was so notorious that a book (ISBN 0803279957) was written about its ramifications - see http://bookshelved.org/cgi-bin/wiki.pl?TheSokalHoax.

Alan Sokal is Professor of Physics at New York University.

See also http://en.wikipedia.org/wiki/Sokal_Affair