In the 15th-season finale, the arrest of Kenny's parents sends him and his two siblings into the foster-care system, but the situation creates a dilemma for Cartman, who is left without a target to mock for being the poorest kid in school.

The boys learn what really happened at the first Thanksgiving—including an extraterrestrial presence—from a TV documentary.

Cartman's lack of physical fitness makes him a target for the other kids' scorn.

Randy turns into a huge fan of Broadway shows after he takes Sharon to see a hit musical in Denver.

A hacker wreaks havoc with gossipy Web posts on a site called "The South Park Elementary Eavesdropper."

Cartman fancies himself an agent of the U.S. Border Patrol when the boys play Texans vs. Mexicans.

Matt Stone, Trey Parker, and the others on the South Park production team takes their viewers behind the scenes to show what takes place in order to create new episodes each week.

Stan's stuck in an abnormal rut; Cartman suspects he has Asperger's syndrome.

Stan's outlook on life begins to change after his 10th birthday, but it also affects his friendships with the other kids, who find they have little in common with him anymore.

Butters gets diagnosed with multiple personality disorder, and he's prescribed medication.

Cartman hatches a plan to help babies who are born addicted to drugs

Cartman is sent to anger-management therapy when he's upset after personal information about the boys is posted on the school bulletin board.

Canadian-born Ike shares his country's obsession with a royal wedding and offers his services when the princess-to-be is abducted.

Jimmy hosts the Special Ed department's inaugural Comedy Awards, but a comment about the Germans' sense of humor gets the school in hot water.

The 15th season begins with the launch of a revolutionary tablet computer, though Cartman is feeling left out of the technology craze.