Gary Gygax 1938 - 2008
Back in the 80's I was lucky enough to have lunch with Mr. Gygax as part of an interview. I didn't get the job (I still blame Don Turnbull for not telling me that the copy editing test was timed), but then again that company went under within a year. But I was still able to have a very interesting conversation with the co-creator of a game that has been a large and arguably formative facet of my life.
I suspect there will be something at GenCon honoring him.