Mr. Hankey, the Christmas Poo classic Christmas specials with their own irreverent "South Park" twist, and so they watched the famous 1965 "Peanuts" special, "A Charlie Brown Christmas", repeatedly during the production process. Parker said, "At this point, we just sort of wanted to do a Charlie Brown Christmas "South Park" version. That [special] was definitely a huge part of my life growing up." The episode was considered the first "South Park" musical episode, and included such songs as "Mr. Hankey, the Christmas Poo", "A Lonely Jew on Christmas" and "Kyle's Mom is a Big Fat Bitch". Parker and Stone were initially concerned about making
What a Cartoon! intervention: for example, even the music would be an individually crafted score. Each ""Looney Tunes" length" (7 minutes) short would debut, by itself, as a stand-alone cartoon on Cartoon Network. Seibert explained the project's goal in a 2007 blog post: "We didn’t care what the sitcom trends were, what Nickelodeon was doing, what the sales departments wanted. [...] We wanted cartoons." The "What a Cartoon!" staff had creators from Europe (Bruno Bozzetto), Asia (Achiu So), and the United States (Jerry Reynolds and colleague Seth MacFarlane). The crew also contained young series first timers (like Genndy Tartakovsky, Craig McCracken, Rob Renzetti,