Guest Stars Patricia Rodriguez voices Sue Ellen Armstrong Tamar Koslov voices Prunella Deegan Mark Camacho voices Oliver Frensky Sonja Ball voices Jane Read Melissa Altro voices Muffy Crosswire Arthur Holden voices Mr. Ratburn Alex Trebek voices Alex Trebek Bruce Dinsmore voices David Read Holly Gauthier-Frankel voices Fern Walters Fred Rogers voices Mister Rogers Larry King as Himself Yo-Yo Ma voices Yo-Yo Ma Art Garfunkel voices Himself Brigid Tierney voices Jenna Morgan Mark Camacho voices Henry Ford Ellen David voices Bitzi Baxter Uncredited Rick Jones voices Jacob Katzenellenbogan