From Wikipedia, the free encyclopedia Matthew Richard "Matt" Stone (born May 26, 1971) is an American screenwriter, producer, voice artist, musician and actor, best known for being the co-creator of South Park along with creative partner and best friend, Trey Parker. Stone started his film career in 1992, making a holiday short titled Jesus vs. Frosty. His first success came from Cannibal! The Musical. From there he made another short title Jesus vs. Santa, leading him and his college friend Trey Parker to create the animated television seri…