Think IMDB (in terms of what service we are building, not in terms or look and feel). We are building a service that feeds data to a number of external sites, and we are focusing on building a complete, targeted, organized database of all electronic games ever made for any platform. Play with any imagery that evokes gaming: dice, gamepad, joystick, cartridge, etc., but we will probably prefer the logo to be a recognizable abstraction of one of those rather than a literal drawing. We want simplicity, and impact.
You can see a stripped-down version of the current site here:
http://www.gamedb.com It basically has no 'style' yet; we're just testing out some tech.
The logo will also appear on other sites, in the context of "powered by", so the logo should scale down well. Bonus points if it somehow conveys the idea that our information is broadcast, syndicated, shared.