For those of you who are following along at home, if you do actually want to learn something about levers, I found two really fun youtube clips: Eureka! and Bill Nye. Eureka! has this great Schoolhouse Rock look, and as for Bill Nye, I just have to say, I knew him when. And when I say 'knew', I mean, I used to watch him on Almost Live!, this really great Seattle-based program that used to precede SNL when I was a youngster. Good stuff.