Sesame Street names its new Muppet dog "Barkley"; Comedian/pianist Victor Borge demonstrates high notes and low notes; actress Madeline Kahn sings, "Me, Me, Me"; Herry Monster learns "up" and "down" with John-John, and Ernie is fooled by a newspaper boy.

Big Bird cannot remember how to write a lowercase "r". Luckily, a cute letter "r" drops onto his easel! With the help of his uppercase and lowercase visitors, Big Bird practices writing the letter "r". Gordon and Mr. Hooper meet the two Rs.