Hi;
When I was in elementary & jr high school, there was an amazing Saturday-science-program at the Boston Museum of Science that had a teacher/lecturer who was simply so engaging, so entertaining, yet so challenging to the kids with his lectures, it inspired me. He showed it could be fun to be a geek. I recall his "gravity" lecture, where he donned a costume, climbed a "Tower of Pisa" (which leaned precariously on cue), and demonstrated various things about gravity. It was hysterical, but also very informative. I just never got bored, and perhaps that in & of itself, was the most influential aspect of the whole thing.