Random Episodes
HUMANCENTiPAD
Kyle is intimately involved in the development of a revolutionary new product that is about to be launched by Apple. Meanwhile, Cartman does not even have a regular iPad yet. He blames his mother. 
Butterballs
Stan wants to raise awareness about the dangers of bullying by shooting a big dance video, while Butters falls victim to an unlikely bully. He gets killed by Kyle after the dance. 
The End of Serialization As We Know It
Cartman finally understands why Heidi wants to get him to Mars. 