Isaac Newton (1642-1727) was a physicist, mathematician, astronomer and philosopher who famously described what would become the law of gravity. Newton often claimed that the revelation came to him after witnessing an apple falling from a tree. Exaggerations of this story have gone on to suggest that the apple hit Newton on his head, thus knocking the idea into his mind.
- Kermit the Frog spoofed Newton on the cover of a 1983 notebook titled Jim Henson's Muppets View of History.
- Muppets Tonight episode 206 features a preview for "next week's" Great Moments in Elvis History, "Sir Elvis Newton," where a falling apple gives him the idea to make it into a pie.
- The Sesame Street story "The Kingdom That Had No King" plays off the idea of the apple knocking an idea into Newton's head. In this version, apples hit the townsfolk on the head, giving them ideas on how to live without a king. (First: Episode 3003)
- In a Sesame Street film insert about the word "apple," a boy sitting under a tree is hit with a falling apple while doing work, similar to Newton.
- The song "Knee Deep" from The Muppets at Walt Disney World features the lyric "But, we don't sink the flagrant stink 'cause we broke ol' Newton's laws!"
- Disney employees accompanying the Muppet Mobile Lab play the part of interns for Muppet Labs whom Dr. Bunsen Honeydew refers to as "Newton" and "Einstein".