Gary Gygax co-created Dungeons & Dragons with Dave Arneson in 1974, and founded the pioneering role-playing game publisher TSR. Basically, the guy invented the modern role-playing game.
In many ways my interest in writing can be traced to the fun I had creating D&D adventures for my step-brothers and myself. The joke was that we never got around to actually playing because we were always so busy preparing to play. So much work went into the creation of our fantasy world and characters that we ended up with very little time to actually role the dice and kill some monsters. For me, though, it was the creation part that was the most fun.
A Moment of Silence for Gary Gygax: