Robotics
If you found your way here from Maker Faire, then it is great to see you again! I'm hoping that you are really excited at this point about building your own robot. Here are some great links to get you started.
http://www.letsmakerobots.com
http://www.solarbotics.com
http://www.sparkfun.com
http://www.trossenrobotics.com
http://arduino.cc
http://www.instructables.com