Robotics:

• 6 Legged Robot - Instructions for building a 6 legged robot.
  URL: http://sachin.surendran.googlepages.com/howtobuilda6leggedrobot
• Ikalogic - Tons of helpful articles for the curious robot builder.
  URL: http://www.ikalogic.com/
• RAS - The IEEE Robotics and Automation Society
  URL: http://www.ieee-ras.org
• RoboCup - YAAAAAAAAAAY =D
  URL: http://www.robocup.org/
• Robots.net - Robotics News
  URL: http://www.robots.net/