Moriarty also gives highly entertaining, if questionable on the
relevance scale, talks at games-industry trade shows like the
Game Developers Conference. At GDC '99, he did this presentation on the best
massively multiplayer game he'd ever ever played. It was called
Paul Is Dead, and he played it for years with millions of other
Beatles fans.
While it's debatable whether his talk helped enlighten young developers, it was inspirational and very humorous. He encouraged designers to throw a little randomness and chaos into their games, saying (to paraphrase from poor memory) "Make those tanks sometimes break off the attack and head out across the battlefield in a random direction. Players will be surprised, thrown off balance, and some game reviewer somewhere will praise your innovative AI."
Haven't seen him actually put out a game lately, but we revere our elders.