Ideas For High School Electronics Class?

mithrandirFan asks: "I am about to teach an electronics class at the Mississippi School for Mathematics and Science, a school for academically gifted 11th and 12th grade high school students. There is no set curriculum for this class. In the past, the class has been taught with BASIC Stamps. By the end of the class, the student had built a fairly simple robot that could do things such as running away from light, following a wall, etc. I was wondering if the /. community had any other ideas that I could use in enhance the class. Keep in mind that there is no past electronic or programming experience required for the class, but also these are academically gifted students."