No matter how old you are, hearing the words "I'm just a bill" is bound to bring back some happy memories.I probably learned more from this cartoon than I did in Civics class.WUSFDespite all of the boring and slow educational shows we watched as kids, it was always enjoyable to learn something from Schoolhouse Rock. The TV show taught us math, science and English using catchy tunes that were easy to remember. Be honest, do you still hum the multiplication songs to yourself? That was why the show was created in the first place. Madison Avenue ad executive