Howard Phillips Lovecraft (August 20, 1890 – March 15, 1937) – the finest and most inspirational horror writer of the 20th Century.
To learn more about one of my favourite authors check out his Wikipedia entry or The HP Lovecraft Archive.
To discover his impact on role-playing games, and the evergreen Call Of Cthulhu game, there is no better place to start than Yog-Sothoth.Com.
For more Lovecraftian goodness – including one of the finest fan films ever produced (and progress reports on a second) – it’s also worth visiting The HP Lovecraft Historical Society.
And all these sites have a multitude of sanity-busting links that should more than satisfy your hunger for arcane knowledge of things man was not supposed to know…