Gary Gygax is the greatest RPG writer who ever lived.
Certainly the greatest module designer of all time. The fact that some people have made a career both trying to design from a "anything but Gary" philosophy and have tried to denigrate his skills is what often happens when lesser talent is confronted with true genius.
Oh, and the Roger Moore era of Dragon Magazine was the magazine's golden age too. You know, back when there were Top Secret, Marvel and Gamma World articles.