This is not a clip-episode, but it does show scenes of Pepper Ann's last day of the seventh grade, but the scene was not from any episodes.
Lydia is married to Alex Trebek in the future.
Pepper Ann is not a Nobel Prize-winning scientist in the future, however she is a video game designer who makes educational video games that are science-related.
Mark Hamill: I'd like to thank you all who supported my health fund. (mumbling) All two of you.
Pepper Ann's Boss: Your game just doesn't have enough "Oomph"!