Chris Bateman at Only a Game has an interesting - if jargon heavy - post up on his nine hypothetical types of gamers, broken down by patterns of play, emotions, and skills. What's his purpose for putting such a list together? He's trying to design a survey that could lead to answering a couple of questions: "What are the basic types of player? Can we uncover a comprehensive inventory of play styles? What would this teach us about games and game design?"
If you're up for following his links and dealing with some heavy sledding, it's a thought provoking read. What's your style?
The Nine Basic Players (Maybe) [Only a Game]




















