My favorite bit was at the end. "Why am I paying $14.95 a month for this?". XD
South Park Release: October 4th, 2006Simpsons Release: April 22nd, 2007
Estimated South Park Production Start:September 17th, 2006Estimated Simpsons Production Start:July 22nd, 2006
As much as I love the South Park episode more, Simpsons was most likely the first to start writing the actual episode.