From Muppet Wiki

Snuffy as "Snuffle Jane"

Jane Fonda (b. 1937) is a two-time Academy Award-winning actress and the daughter of Henry Fonda. Her notable film credits include Cat Ballou, Barefoot in the Park, Klute, Barbarella, and Monster-in-Law. She is also known for her political activism, notably her opposition to the Vietnam war, and a successful series of home exercise videos.

In 1982, she was one of the many celebrity performers in the special I Love Liberty, as were the Muppets.

References

• In a 1980s Sesame Street skit, Mr. Snuffleupagus took on the guise of "Snuffle Jane" to teach aerobics, spoofing Fonda.

• Miss Piggy's Aerobique Exercise Workout Album was largely a response to Fonda's videos, books, and albums.

• In the book The Great Muppet Caper!: The Making of the Masterpiece, the text claims that Kermit had co-starred with Jane Fonda in a film titled A Caring Woman with Dignity.

• Miss Piggy browses through one of Fonda's workout books in a Muppet comic strip by Guy and Brad Gilchrist.

• In the Dinosaurs episode "Nuts to War, part 2, "Fonda" is one of the many names reported as opposing the Pangaean government in the war effort, along with Dashiell Hammett, Lillian Hellman, and Frank Zappa.

• A Sesame Street sketch features Grover hosting his own Jane Fonda-esque workout video. Even during his jumping exercise he exclaims "Jane Fonda, eat your heart out!"