There's a Pet Show on Sesame Street, and everybody proudly shows off their pets. Oscar the Grouch is disappointed that all the entrants are cute, and wishes there were better pets like spiders or jellyfish. Unbeknownst to Oscar, Slimey the Worm enters the competition, and wows the judge by making the letters U, C, and O, and dancing the "worm-trot". He wins first prize, and Oscar is appalled that other people think his pet is sweet and friendly.
Cartoon: What if a dog looked like a bird?
Cartoon: A woman explains the letter H and its use in "horseshoe", when a horse comes to reclaim his shoe and starts tickling the woman. (First: Episode 0020)
Little Bird plays an imagination game on the Street.
Two Muppet hands argue over a piece of cake before they decide to share it. (EKA: Episode 0235)
Cartoon: "Poverty H" -- an orange figure tries to talk about the letter H, but a yellow figure keeps listing H words. (First: Episode 0020)
Cartoon: A man (voiced by Gary Owens) explains how H starts the word "Hello", which is then demonstrated by people calling him and asking for someone named Harold. (First: Episode 0020)
Tom explains the difference between capital and small "H".
Hubley animation: A big elephant and a small elephant make lowercase Hs come out of their trunks.
Ernie and Bert: Lefty the Salesman sells Ernie some air. When Ernie wants to show it to Bert, Bert accidentally causes Ernie to drop it. According to Bert (who didn't know what Ernie had), "It's not like it dropped into thin air". But Ernie insists that it did. (First: Episode 0118)
Film: A boy uses his wagon as a pretend bus, and explains to his friend that his dad is a real bus driver. Footage of his father working shows what a bus driver does. (EKA: Episode 0181)