Mr Burns' mystery attacker is finally revealed. There's a shock confession, and Homer has a clear motive: but could the truth be even more bizarre?
Bart auditions to play Fallout Boy when Springfield is chosen as the location for Rainier Wolfcastle's big-screen adaptation of Radioactive Man
Homer and Marge are sent to Bad Parent School when Bart catches head lice and Lisa loses her shoes...
Bart sells his soul to Milhouse, who swaps it for some ALF pogs. Meanwhile, Moe re-launches the Tavern as Uncle Moe's Family Feedbag.
Lisa turns vegetarian after petting a lamb, but can't find anyone in Springfield who shares her sensibilities, except for Apu and his friends Paul and Linda McCartney
Homer is sucked into a 3D digital dimension, and ends up trapped in the real, non-animated world
Homer tries to put on enough weight to be classified as disabled so that he can work from home
Homer's long-lost mother (guest star Glenn Close) turns up on the run from the police
Sideshow Bob escapes from prison - again - and threatens to blow up the Springfield air show
Troy McClure hosts a celebration of the milestone that is the 138th episode of The Simpsons
Bart gets on the wrong side of a scary security guard - and Marge - when he steals the latest computer game from the Try-N-Save
Homer forms a bowling team - the Pin Pals - with Moe, Apu and Otto; but one of them has to go when Mr Burns muscles in on the team
George Bush Sr moves into Evergreen Terrace, but Bart destroys his memoirs, sparking a feud between the ex-president and his new neighbour Homer
The family are invited to join an exclusive country club, but while Homer, Bart and Lisa make themselves at home, Marge has trouble adjusting
Bart gets Krusty the Clown busted for tax evasion, then Krusty disappears in a mysterious plane crash
Lisa finds out that Springfield's founder was a murderous pirate who tried to assassinate George Washington, and decides her fellow citizens should know the truth
Worried that Mr Burns may decide to replace him permanently when he takes a well-earned break, Smithers chooses the plant's worst employee to fill in for him
Bart and Lisa help a homeless man (guest star Kirk Douglas), who claims he invented Itchy & Scratchy, to sue the programme makers
Actor Troy McClure is in desperate need of some good publicity following his implication in a sordid sea-life scandal. So he arranges a sham wedding with Selma.
With Bart's fake driving licence and $600 Martin made on the stock market, the boys set off with Milhouse and Nelson on a road trip to the World's Fair in Knoxville
A Pulp Fiction-style trip through the everyday life of Springfield reveals what really goes on in this apparently normal town
Monty Burns wants Grandpa Simpson out of the way so he can get his hands on some valuable art
Homer helps Apu study for a naturalisation exam to prove he's American enough to stay in the country
Homer goes on the road with alternative rock festival Hullabalooza in a sideshow where he has cannonballs fired into his belly
Lisa uses the holiday as a chance to change her image, and gets in with a cool crowd (guest star Christina Ricci). But Bart is not pleased that his sister is so popular.