If you were a child during the seventies as I was, then the Emmy Award winning School House Rock™ cartoon series has a special place in your heart. I recently picked up the dvd for our son, containing every single one of these educational and entertaining pieces, which vary in topic from math to grammar, from to science to American history. Absolutely priceless hearing little Reis run around the house singing "Conjunction Junction". Buy the DVD here.
Here's something I stumbled upon while searching for the "Nouns" cartoon: