The Simpsons - Season 22 Episode 21 - When the Simpsons discover a collection of keys to every door in Springfield, Lisa stumbles upon an eerie hidden classroom beneath Springfield Elementary School. When she shares her discovery with Principal Skinner, the secret room mysteriously disappears and he takes the only key away.
The Simpsons - Season 22 Episode 22 - In the 22nd-season finale, Ned Flanders saves Edna Krabappel's life and they begin dating. To Ned's surprise, he learns that Edna has been with many of Springfield's men, including Homer and Aerosmith drummer Joey Kramer, who provides his own voice.
The Simpsons - Season 23 Episode 1 - Homer befriends Wayne (guest voice Kiefer Sutherland), a reserved security guard recently hired by the nuclear power plant. Plagued by violent flashbacks from his past as a CIA agent, he must overcome his tortured nightmares to save Homer from a Ukranian terrorist. Meanwhile, Marge fantasizes about being a contestant on "Top Chef" hosted by Tom Colicchio (guest voicing as himself), and the future of Springfield's hottest "it" couple Nedna, Edna Krabappel (guest voice Marcia Wallace) and Ned Flanders, will be revealed after months of online fan voting and speculation.
The Simpsons - Season 23 Episode 2 - Principal Skinner challenges superintendent Gary Chalmers to take over Bart's education after one of Bart's pranks leads to a school fundraiser debacle. Chalmers takes an unconventional approach to teaching American history which sparks a fascination in President Teddy Roosevelt. Encouraged by Bart's educational renaissance, Chalmers takes Bart and his band of "Rough Riders" on an overnight excursion to Springfield Forest, but after a minor accident, the school administration fires Chalmers for taking the boys on an unauthorized field trip. Determined to get Chalmers" job back, Bart and the boys hold the school hostage until the administration reinstates Chalmers, and they stand up for the teacher who made a meaningful impact
The Simpsons - Season 23 Episode 4 - Bart's science fair project, a mechanical baby seal, outshines Lisa's brainy asteroid model and becomes a popular pet among the retirement home patrons. Meanwhile, Homer gets a new and eager assistant Roz (guest voice Jane Lynch), but when Homer quickly loses his job to her and discovers her evil past, he and Ned team up to reveal her true dark colors