P. F. Strawson

Peter Strawson died 13 February 2006.  An obituary can be found here:  http://www.timesonline.co.uk/article/0,,60-2040505,00.html

UPDATE (from Neal): Brian Weatherson is keeping track of obituaries for Strawson here.  There's no doubt about the importance Strawson's work has had for the literature on free will and moral responsibility.  Gratitude is surely an appropriate reactive attitude.