How “South Park” Made It Onto TV

Trey Parker and Matt Stone were film school buddies at University of Colorado-Boulder and they thought they would do something “Christmassy” for the end-of-the-year student review. They had been cracking each other up with foul-mouthed little kid voices while sitting around film sets, and so they put those characters on screen using construction paper and crude animation. The audience loved it, and after a winding road, they convinced some adults at Comedy Central to approve the pilot. The rest is television history. Entertainment Weekly looks back at “The Spirit of Christmas.”

How ‘South Park’ was born: An oral history of ‘The Spirit of Christmas’

Microsites.EW.com, 3.18.15