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 Larry King as Himself Fred Rogers voices Mister Rogers Ellen David voices Bitzi Baxter Art Garfunkel voices Himself Yo-Yo Ma voices Yo-Yo Ma Brigid Tierney voices Jenna Morgan Mark Camacho voices Henry Ford Uncredited Rick Jones voices Jacob Katzenellenbogan