Jeroen Van Dongen
Much has been written of late about the nature of denialism. New Scientist a couple of issues back produced a special report on the subject, for example, and the New Humanist explores the idea of "unreasonable doubt."
There's plenty more out there. The most provocative I've come across (thanks to Joss Garman via DeSmog Blog's Brendan DeMelle) is a 2009 paper in the journal Studies in History and Philosophy of Modern Physics by Jeroen van Dongen of the Institute for History and Foundations of Science at Utrecht University in The Netherlands. His thesis is ideologically based denialism of…