Gary Gygax, co-creator of Dungeons & Dragons and father of all dungeon masters, passed away today at the age of 69. There are a few tribute pages out there already.
This is the Wizards Of The Coast Dungeons & Dragons Roleplaying Game Official Home Page. Not sure how long they’ll keep that active.
This is the tribute page at Penny Arcade. I like this one.
The Gary Gygax Wikipedia page.
Gary was last working with Troll Lord Games. This is the announcement in the forums.