She featured perhaps most prominently in Christmas Eve on Sesame Street during a montage of moments in which Kermit the Frog and Grover ask several kids how Santa Claus gets down the chimney. Jennifer's theory includes Santa achieving this feat by sliding and/or squishing.
- Episode 1224 — as one of the kids in day care
- Episode 1404 — looking through Arnold Hooper's family history book
- Episode 1405 — playing in the yard
- Episode 1424 — helping to build Barkley's dog house
- Episode 1485 — refurnishing Bob's apparently burgled apartment
- Episode 1500 — cheering on the Wide World of Grouch Sports
- Episode 1539 — deterring Buffy's membership in D.O.G.
- Episode 1541 — as a Camp Uglyyucchy camper
- Episode 1562 — expressing concern for Oscar the Grouch's run for mayor