Nice! Since I'm half-Danish and Lego comes from Denmark, my brother and I had a lot of lego to play with when we were kids.
You might like this since you're interested in robots, Jeanne (probably you already know this...): Lego also has robot stuff, Mindstorms.
Years ago I participated in a contest together with a colleague with Lego Mindstorms robots. We had to build our own robot, and also program it (in Java, there is a JVM for these robots) to navigate through a maze. The robot could use different kinds of sensors, for example a light sensor that could see if the robot was on a black or white surface, and a touch sensor that could see if the robot bumped into a wall. That was fun.