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! ended on June 1, 2008. In 2007, reruns of "What a Cartoon!" played briefly on Cartoon Network's retro animation sister channel, Boomerang. "What A Cartoon!" is the 1st short cartoon incubator created by Fred Seibert. Starting with WAC! and continuing throughout his cartoon career, his Frederator Studios has persisted in the tradition of surfacing new talent, characters, and series with several cartoon shorts "incubators," including (as of 2016): "What A Cartoon!" (Cartoon Network, 1995), Nickelodeon/Nicktoons' own "Oh Yeah! Cartoons" (1998), "Nicktoons Film Festival" (2004), "Random! Cartoons" (2008), "The Meth Minute 39" (Channel Frederator, 2008), "The Cartoonstitute" (Cartoon Network, 2009/unfinished), "Too