A Halloween trilogy. This time, Bart meets his "pure evil" Siamese twin; Lisa's science project attacks Bart; aliens Kang and Kodos invade as Clinton and Dole's replicas just before the 1996 Presidential election.

When Moe sees that Homer can absorb massive blows to the head, he turns him into a prizefighter and sets up a match with heavyweight champion Drederick Tatum.

Mr. Burns' boorish long-lost son Larry gets the brush-off from Burns, but Homer hatches a plan to reconcile them.

After trespassing and damaging property at a mysterious old house, Bart is required to work there as a punishment... but it turns out to be a burlesque house.

Kirk and Luann Van Houten are getting a divorce. Homer is confident that it will never happen to him, but Kirk tells him how quickly things can change.

Lisa develops a crush on Nelson and tries to change him into a better person. Meanwhile, Homer finds an autodialer and starts a telemarketing scam.

A hurricane destroys the Flanders' home and they have to move into the church basement. The people of Springfield gather to rebuild their house, but when Ned sees the poor workmanship, he has a complete breakdown.

After eating a dish laced with potent peppers during the chili cookoff, Homer has hallucinations where a mystical coyote urges him to find his soulmate.

Homer witnesses something out of this world in Springfield woods, but no one believes him -- not even FBI agents Fox Mulder and Dana Scully, who come to investigate the incident.

Marge's new pretzel franchise is failing until Homer strikes a deal with Fat Tony, Springfield's local mobster.

To promote teamwork amongst the power plant's employees, Mr. Burns makes them go on a corporate retreat up in the mountains.

Marge is stressed by the demands of motherhood and the Simpsons get a magical British nanny, who floats down from the sky holding an umbrella.

In an attempt to boost ratings, the Itchy and Scratchy Show adds a new "in-your-face" character voiced by Homer.

The Simpsons befriend a shop owner, but when Homer discovers the man is gay, he worries about his influence on Bart.

When Sideshow Bob is released from prison, his brother Cecil puts him in charge of building Springfield's new hydroelectric dam.

Lisa has a stellar reputation as a babysitter, but when Homer and Marge leave her in charge of Bart and Maggie, everything starts going wrong.

When Prohibition is revived in Springfield, Homer and Bart supply the town with alcohol.

Bart discovers Principal Skinner and Mrs. Krabappel kissing, and it's not long before the whole town knows of their secret affair.

When Bart can't pay the credit card bill for his expensive new purebred dog, the repo men unwittingly take Santa's Little Helper.

Financially ruined, Mr. Burns turns to Lisa for help in building a recycling business. Lisa believes he's changed, but his new business venture takes a shocking new direction.

Disturbed that Reverend Lovejoy has lost interest in counseling parishioners, Marge volunteers as the "Listen Lady." Meanwhile, Homer sees his likeness on a box of Japanese detergent.

A hardworking new employee at the power plant is consumed with resentment at Homer's undeserved success.

Troy McClure presents three Simpsons spinoff spoofs: In "Chief Wiggum, P.I.," Chief Wiggum becomes a New Orleans detective. Next, Grampa Simpson's soul is trapped inside Moe's Love tester machine in "The Love-Matic Grampa." Finally, the Simpson family hosts a '70s-style variety show.

Lisa joins the all-male military school where Bart is sent for discipline. Then comes the hazing.