Episode 3126




 * Ernie lies in bed and starts talking about how a square looks like and how many lines it has, then goes on to compare a square with a triangle. And then starts to ponder about how many sides a circle has, and goes to sleep just as Bert is about to attempt to answer the question, and ends up not being able to sleep.


 * "Cookie Disco"


 * The Beetles perform "Letter B."


 * Grover asks Maya to help him follow an arrow. The arrow keeps changing direction until Grover falls down, exhausted.


 * On a rainy night, The Count brings Susan Sarandon to a locked castle. He knocks on the door just for the sake of counting the knocks, until it's revealed that the castle is his own. He then proceeds to unlock the numerous locks.


 * Camp Wannagohoma: Grover tries to teach his campers (including Roosevelt Franklin) about what an island is, but he gets his vocabulary mixed up. He also fails to notice when the campers board the motorboat for lunch, leaving him stranded.


 * Little Chrissy sings "Eight Balls of Fur."


 * Oscar sings "I Love Trash."


 * Polly Darton sings "Watin' at the Bus Stop for You."


 * Four lambs sing about how they always add up to four.