Though some may have been disappointed by the show's decision to kill off Kenny and his gimmick for good, we think that the first five seasons were culminating toward this perfect moment, when Kenny McCormick, known for dying in almost every episode, would die for real. Aired near the end of the show's best season, "Kenny Dies" managed to be funny and a little bit sad at the same time. To not check out this episode would be a "fetal mistake."

The Titus Andronicus-esque ending of this episode is easily the most infamous moment in South Park history. Before "Scott Tenorman Must Die," Cartman was just a whiny little fat kid. But with this episode, the second of three on this Top 13 from Season 5, he became the most evil kid in the world capable of things no fans could have ever expected. This episode also is notable for featuring a hilarious cameo by Radiohead.

For tonight's milestone episode, Parker and Stone have promised the return of several real-life characters whom they have really pissed off. That just about guarantees the return of Tom Cruise, who notoriously got the premiere of "Trapped in the Closet," which poked some fun at him and Scientology, pulled off the air. Of course, fans revolted and the episode was eventually broadcast. Sadly, though, this fiasco led to the grisly end of the character Chef, who was given life by deep voice of Isaac Hayes, a Scientologist.

When Bebe shows up to class with the slightest appearance of breasts, the boys in the class revert back to primal instincts, not unlike the monkeys at the beginning of 2001: A Space Odyssey. Of course, while the boys are excited, the other girls are insanely jealous and begin making up vicious rumors about Bebe's promiscuity. With a plot like that, you'd expect something really funny. And the South Park team didn't disappoint, turning it into one of their finest episodes.

One day, the entire South Park crew unanimously decided that John Edward, the psychic known for his show Crossing Over with John Edward, was the biggest douche in the universe. And, as they are wont to do, they took up 30 minutes of airtime on Comedy Central to say just that. We at the Top 13 think that was airtime well spent, as this episode - which was the last in which Cartman was temporarily possessed by Kenny - is one of our very favorites.

The guys at South Park really must enjoy making fun of Mormons. Their next side project is a collaboration with Avenue Q's Robert Lopez to create a musical that's, well, all about Mormons. Parker and Stone also got some digs in with their 1997 film, Orgazmo. But they don't merely call the religion "dumb" in this episode; instead, they portray Mormons as the nicest people around and, perhaps ironically, the only ones that make it into heaven. Though this episode is universally considered among the show's best, it was - not surprisingly - roundly criticized by the Mormon Church.

Based on the Terri Schiavo saga, "Best Friends Forever" is another Kenny-centric episode. This time, the boy in orange dies, gets recruited by heaven's army to command them against Satan's troops, and is brought back to life in a vegetative state. This stirs up a debate over his life (and more importantly, possession of his PlayStation Portable). Airing the day before Schiavo passed away, the episode won an Emmy Award for Outstanding Animated Program.

Upset that shows like NYPD Blue get labeled "bold" and "artistic" for using the word "shit" on television, Parker and Stone decided they would use it 200 times in this episode. Each time a character said "shit," a counter at the lower left side of the screen increased in number, eventually reaching 162 (the remaining 38 appearances were visual), at which point a dragon named Geldon broke through the surface of the earth and wreaked havoc. There's apparently a reason they call them "curse" words.

This Emmy-award winning episode turns Cartman and his band of newbs into the most legendary World of Warcraft players ever as they totally pwn the artard who is killing all of their characters. The Top 13 took one of Cartman's lines in this episode to heart: "You can just hang outside in the sun all day and toss a ball around or you can sit at your computer and do something that matters..." As you can see, we decided to make a list of the best South Park episodes, which obviously matters.

South Park is known for putting out some truly demented Christmas specials, whether they involve a talking piece of poo, Santa getting shot down over Iraq, or in this case, a group of devil-worshipping forest creatures. Our favorite of the show's many great Christmas episodes, this one - which was inspired in part by the film Event Horizon - features the anapestic rhyming narration and storybook style common to South Park's Christmas shows.

"Where were you when they built the ladder to heaven?" sings Alan Jackson in this episode that began a five-episode story arc in which Cartman shared his body with Kenny's soul after drinking his ashes, thinking it was chocolate milk mix. In "A Ladder to Heaven," the world rallies around the boys as they try to get a winning raffle ticket back from Kenny. Naturally, the kids' actions lead to the U.S. military's decision to bomb heaven.

In our opinion, Kyle's little brother, Ike, might just be the funniest supporting character on the show. So while we're bound to love any episode focused on Ike, this is our very favorite. While Ike gets into a sexual relationship with his kindergarten teacher, Cartman is finally given "authoritah" as the school's hall monitor. He takes this as his cue to parody Dog the Bounty Hunter, and sets out to put an end to the inappropriate behavior. Duane "Dog" Chapman recently commented on the episode in his biography: "You know you've really made it when they include you on their show."

When Cartman is kicked out of the boys, band, Moop, he responds by starting a Christian rock band of his own called Faith + 1. His new band achieves great success by merely taking classic love ballads and changing the romantic subjects of the songs to Jesus. Nevertheless, for reasons that we won't reveal here, the band doesn't quite achieve Cartman's goal. This episode, which reveals Cartman's competition with Kyle as the true motivation for his manipulative behavior, also mocks the consequences for artists like Metallica and Britney Spears of illegal music downloads.