With Mr. Burns shot, Chief Wiggum investigates the crime, and nearly everyone in town has a motive. At the end, it all comes down to the Simpson DNA.

Bart auditions for the part of Fallout Boy in the movie "Radioactive Man," being filmed in Springfield.

When Homer and Marge are found to be unfit parents, the kids are placed with the Flanders family. Reluctant participants in the Flanderses' wholesome family activities, Bart and Lisa become the targets of an emergency baptism.

Bart sells his soul to Milhouse for five dollars, but soon regrets his decision. Meanwhile, Moe turns the Tavern into a family-friendly restaurant.

After visiting a local petting zoo, Lisa becomes a vegetarian and faces ridicule from family and friends. When she lashes out and ruins Homer's barbecue, she learns a lesson in tolerance.

Homer tries to gain sixty pounds so he can stay home on disability. When he nearly causes a catastrophe at the plant, Homer reconsiders his plan.

Homer discovers that his mother is still alive, a former radical who is a fugitive from the law. When her old nemesis Burns spots her and tips off the FBI, she is forced to return to the underground.

After Sideshow Bob escapes from prison, the Springfield Air Show is the setting for his ill-fated vendetta against television and Krusty the Clown.

Troy McClure hosts a behind-the-scenes look at the show, including clips of the series' beginnings as shorts on "The Tracy Ullman Show," Simpsons trivia questions, and unaired scenes from popular episodes.

Nabbed for shoplifting, Bart manages to keep it a secret from the family... until it's time to have the family Christmas photo taken at the Try-N-Save.

Homer catches Mr. Burns in an ether-induced haze and asks for $500 for his bowling team. When Burns' head clears, he demands to join the team. Meanwhile, Bart's inflammatory T-shirt provokes Principal Skinner to require school uniforms.

Homer resents being upstaged when former president George Bush moves into the neighborhood. After Bush spanks Bart, an all-out prank war ensues.

A chance encounter with a former classmate yields an invitation to the Springfield Country Club, where Marge tries to parlay a bargain basement Chanel suit into elevated social status for her family.

In a scheme to get Krusty's autograph, Bart sends him a check. When Krusty's offshore holding corporation endorses the check, his illegal tax shelter is exposed. In despair after the government auctions off his possessions, Krusty fakes his own death.

While researching into Jebediah Springfield's past for an essay, Lisa discovers that the town founder wasn't the hero that everyone thinks he was.

Forced to take a vacation, Smithers needs to find a temporary replacement who won't outshine him. Homer seems the perfect choice until a sudden outburst forces Mr. Burns to assert his independence.

Bart meets the original animator who created Itchy, penniless some 70 years after the studio stole his idea. When Bart helps him sue for restitution, he unwittingly bankrupts Itchy & Scratchy.

Washed up and plagued by scandal, Troy McClure sees a marriage to Selma as his ticket back to success.

Bart creates a fake driver's license for himself and uses it to go on a spring break road trip with Milhouse, Nelson, and Martin. Meanwhile, Homer and Lisa bond after spending some quality time together at work.

Bart and Milhouse wonder if anything interesting happens to the citizens of Springfield, which leads to a series of interconnected vignettes.

When a fellow veteran dies, Grandpa Simpson and Mr. Burns fight for buried WWII treasure as the only surviving members of their battalion.

When Mayor Quimby uses immigrants as a political scapegoat, the Simpsons discover that Apu is an illegal immigrant.

To show his kids how hip he is, Homer takes Bart and Lisa to a music festival, where he earns himself a place in the sideshow by catching a cannonball with his belly.

On a family vacation, Lisa tries on a new identity to fit in with the other kids at the beach. Jealous, Bart reveals her true nerdiness to the group.