Cartoon: A boy wonders what would happen if his best friend was a gorilla.
Ernie and Bert: Ernie comes home to a sleeping Bert and tries to think of things to do that won't wake him up. He can't watch TV, and he can't play with his ball. Bored, he decides to take a nap too -- but then he starts to snore. This awakens Bert, who wonders out loud where the noise is coming from, in the process arousing Ernie, who gets mad at being woken up. (First: Episode 0280)
Cartoon: Two kids wonder where some mysterious tracks on the ground come from. (EKA: Episode 1056)
The Martians discover a grandfather clock and wonder if it's an earth person. They consult their book, which says an earth person is tall, has a face, and has hands. The clock fits the description perfectly! (First: Episode 0407)
Everybody on Sesame Street goes up to the roof to be alone.