Treehouse of Horrors XIII
First Homer gets a magic hammock that “copies” himself and makes duplicate Homers. Then Lisa gets guns banned in Springfield, leaving Springfield unable to defend itself from Zombie attacks.  Lastly the Simpsons head for an island vacation hosted by Dr. Hibbert to find all people there are mutated.

How I Spent My Strummer Vacation
When Homer is secretly videotaped complaining about his family they send him off to a rock and roll fantasy camp so that he can regroup and try to live his dream. He is taught to be a rock star by famous rockers, but when the week ends he doesn't want to leave

Bart vs. Lisa vs. 3rd Grade
Watching hours upon hours of bad TV, Bart neglects to study for a test and fails so badly that he gets dropped back to third grade. Meanwhile, Lisa does so well, she gets moved up to third grade. Once they're in the same class, it's sibling rivalry

Large Marge
After having seen Homer flirt with 2 women, Marge decides to get plastic surgery to get his attention back on her.  Her doctor messes up, though, and she ends up with 2 large breasts, which land her a modelling job, but also a lot of back-ache.

Helter Shelter
After Lisa gives an ice hockey player tips on how to beat the goalie, he scores and gives her his stick in thanks. It turns out it contained termites that destroy their house, so they end up on a reality program that simulates life in 1895, having no where else they are willing to stay.

The Great Louse Detective
Someone is trying to kill Homer, and after some smart detective work they find out it's Frank Grimes Jr., son of Grimey.  In the mean time Sideshow Bob has yet another plan to kill Bart, but can't do it in the end, because he's grown accustomed to him.

Special Edna
Bart finds out that Edna feels terrible about Skinner always putting his mother first, so to make her feel better he enters her in the teacher of the year contest.  Skinner doesn't want her to win because he fears she'll leave them, so he plans to rig the election, but in the end comes clean about not wanting to lose her and thus wins her heart all over again.

The Dad Who Knew Too Little
In an effort to get closer to Lisa and get to know more about his daughter, Homer hires a detective to spy on Lisa and find out her likes/dislikes. When Homer refuses to pay the detective’s bill, the guy tries to frame Lisa for a crime, so homer and Lisa go on the run together

The Strong Arms Of The Ma
When Marge gets mugged, she becomes agoraphobic and can’t leave the safety of her home. She holes up in the basement and starts working out on a weight set, thus gaining the courage to go back out again, and starts entering bodybuilding competitions.

Pray Anthing
Homer takes up the habit of praying, and prays for a better house.  By some coincidence, they get the deeds to the church, and Homer turns the church into the party central of the world, causing God to become angry.

Barting Over
When Bart learns that Homer has lost his earnings from a TV commercial he appeared in as a baby, Bart takes Homer to court and is granted emancipation from his parents. He moves out of the house, but Homer finally manages to decently apologise and Bart comes back home.

I'm Spelling As Fast As I Can
Lisa wins a spelling bee and enters the Spellympics, where she's asked to take a dive. Meanwhile, Homer is distraught after Krusty Burger offers a limited-time Krusty rib sandwich, only to promptly remove it from the menu, and follows the Ribwhich all over the  country.

A Star is Born Again
A famous and sultry movie star swoops into Springfield and has eyes for none other than Ned Flanders, who has been lonely ever since his wife passed on. Homer is dying to know if they ever did the “deed.”, but Flanders doesn't Kiss and Tell, driving Homer nuts

Mr. Spritz Goes To Washington
The Simpsons go to their local congress man to complain about the new flight plans over Springfield, but the man dies while hearing their complaints.  They help Krusty to win his now vacant seat in congress, in the hopes that it will help their cause.

C. E. D'oh
Homer takes a new attitude to work, where he makes suggestions to improve safety at the power plant. When Burns laughs at Homer’s proposals, Homer and Lisa devise a plan to take the plant from him. When the plant suffers a meltdown under Homer's management, Burns takes back over.

'Scuse Me While I Miss The Sky
After a filmmaker comes to the school, Lisa goes into astronomy, but finds that there is too much light pollution to see anything. Chief Wiggum encourages Springfield to double its light usage to fight crime, and without being able to sleep cause of the light, the town goes “mondo bizarro".

Three Gays Of The Condo
Homer and Marge have a fight when Homer realizes Marge married him because she was pregnant with Bart. He decides to leave the house and ends up with 2 gay people in and apartment. When he wants to reconcile with Marge he ends up being drunk, but Marge sticks with him.

Dude, Where's My Ranch?
After Homer write a song that is played all over and all the time, they decide to get away from it all and take a restful vacation at a dude ranch, when homer and Bart befriend some native Americans and Lisa gets a crush on a boy.

Old Yeller-Belly
Santa's Little Helper becomes the mascot of Duff beer, after he is shoo-ed out of the house for not saving Homer.  His original owner comes back to claim him, now that he's famous, but Santa's little Helper misses his family, so the Simpsons create a plan to get him out of the public eye

Brake My Wife, Please
Homer loses his driver’s license and Marge is forced to drive him around town. She gets increasingly stressed by having to chauffeur everyone, and she grows angrier and aggressive, and starts to subconsciously wanting to kill Homer.

The Bart of War
Bart is enrolled in the Pre-Teen Braves, a group of kids trying to do things the way Native Americans did.  Milhouse is enrolled in the Cavalry Kids.  As the two groups battle over who can do the most and better charity, will their friendship stay standing?

Moe Baby Blues
Moe accidentally catches Maggie, and he takes a liking to the little baby. He starts hanging around the Simpsons family too much, to be able to spend time with Maggie, so they tell him he can't see Maggie anymore, but then he saves the kid a second time, and they allow them to  be together a bit more.